What is Kottinu?
Cool-jams NightCool is made from Kottinu, our proprietary performance polyester microfiber. Like our everyday DayBasics microfabric, it is soft, lightweight, and breathable with a cotton-like feel. The difference is what happens when you sweat: Kottinu is engineered as a performance sleep fabric for people who sleep hot.
How Kottinu wicks sweat away (MST)
Kottinu uses our Moisture Transference System (MST), a three-step process built into the fabric. Ultra-fine microfibers pull sweat off your skin as it forms, spread it across the surface of the fabric, and let it evaporate quickly. As moisture evaporates it carries body heat with it, helping you stay dry and comfortable.
Odor control that is built in
NightCool fabric is finished with Bact-Out, a treatment that helps the fabric itself resist odor so your sleepwear stays fresher between washes.
Soft, durable, easy to care for
Kottinu keeps the soft, cotton-like feel you want from sleepwear without holding onto moisture the way cotton does. It resists pilling, holds its shape, machine washes easily, and dries quickly.
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Every NightCool piece is made by our original manufacturer, who we have trusted from day one to make the technical fabric that keeps you dry and cool.
The plainest thing we make, and the one women come back for in a second colour: a sleep tee shirt that wears like a normal tee.
Wear this sleep tee for
- Hot nights and 3 a.m. wake-ups. It pulls sweat off your skin and dries quickly, so you settle again instead of lying awake damp.
- Everyday sleeping, on its own or over NightCool shorts, capris or pants.
- Mornings at home. It reads as a normal tee, so nothing needs changing before coffee.
- Travel. Light, flat in a bag, and dry by morning.
- Building a set. Five colours means one for the drawer and one in the wash.
Why it feels good
- The scoop neck sits low and open, which is where heat leaves first.
- A soft sleep tee: cotton-like and smooth. People expect performance fabric to feel like a gym shirt, and this does not.
- Relaxed through the body, so it does not cling when you turn over.
- Bact-Out keeps it fresher between washes.
- Resists pilling and holds its shape, wash after wash.
Good to know
- Five colours: Black, Navy, Merlot, Dusk Blue and Violet. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Scoop T-Shirt is a cooling sleep shirt built for hot sleepers and for nights when you run warm. This moisture-wicking sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Scoop T-Shirt
The Cool-jams NightCool Scoop T-Shirt is a short sleeve cooling sleep tee for women who sleep hot. The scoop neckline leaves the throat open and the Kottinu knit wicks perspiration off the skin and dries fast, with an odor-control finish that helps the fabric stay fresher between washes. It is cut relaxed through the body so it does not cling, and it is finished like a normal tee, which is why customers wear this sleep T-shirt for travel as well as sleep. Five colors, in sizes S to 3X.
Can I wear this as a regular t-shirt?
Yes. It is cut and finished like a normal tee, so plenty of customers wear it for travel and everyday wear as well as sleep.
What bottoms go with it?
Any NightCool bottom: pants, capris, joggers or shorts. The range is sold as separates so you can size each piece.
What is Kottinu fabric?
Kottinu is our proprietary performance sleep fabric, used across the NightCool line. It wicks moisture off the skin as it forms and dries fast.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
You know the feeling. You're tucked in, and somehow you're still too warm. This is the pajama tee we made for that.
Wear it for
- Hot flash nights and 3 a.m. wake-ups. The knit pulls sweat off your skin and dries fast, so you settle back down instead of lying there damp.
- Warm bedrooms and summer heat, the nights when a fan alone is not enough.
- Travel. It packs flat and dries fast, which is handy when you are living out of a suitcase.
- Mornings at home. This pajama T-shirt reads as a regular tee, so coffee on the porch does not need a change of clothes.
- Building a set. Pair it with NightCool capris, shorts or pants in the same fabric.
Why this pajama T-shirt for women feels good
- The soft pleat gives the fabric somewhere to fall, so it skims your stomach instead of sitting against it.
- Soft and smooth with a cotton-like feel. People expect gym-shirt texture from a performance fabric and are surprised by this one.
- The shoulder and sleeve sit close while the body falls away, so nothing clings when you turn over.
- An odor-control finish helps the fabric stay fresher between washes.
- It holds its shape and resists pilling wash after wash, which is why so many women own it in more than one colour.
Good to know
- Five colours: Black, Navy, Merlot, Dusk Blue and Violet. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. Skip fabric softener and dryer sheets, they coat the fibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has trusted since day one.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Pleated T-Shirt is a cooling sleep shirt built for hot sleepers and for nights when you run warm. This moisture-wicking sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Pleated T-Shirt
The Cool-jams NightCool Pleated T-Shirt is a short sleeve pleated pajama top made for night sweats and hot flashes, with a soft pleat at the front that gives the fabric somewhere to fall so it skims the stomach rather than sitting against it. The Kottinu knit wicks sweat off the skin and dries fast, and an odor-control finish helps the fabric stay fresher between washes. The shoulder and sleeve sit close while the body falls away from the pleat. Five colors, in sizes S to 3X.
What does the pleat do?
It releases fabric across the front so the top drapes away from the body. People who dislike a close-fitting tee usually prefer this cut.
Is this top loose or fitted?
Relaxed. The shoulder and sleeve sit close, and the body falls away from the pleat.
Is it good for night sweats?
Yes, it is cut from the same Kottinu fabric as the whole NightCool line, which wicks moisture and dries fast.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A long sleeve pajama shirt that does not trap the heat, for people who are cold going to bed and hot by two in the morning.
Wear it for
- Cold bedrooms with warm nights inside them. Covered when you get in, handled when the heat comes.
- Night sweats and hot flashes. The knit wicks and dries fast even under a duvet.
- Autumn and winter, worn with NightCool pants or joggers.
- Working from home. It reads as a plain long sleeve lounge top.
- Travel. One top that covers the whole trip.
Why this long sleeve sleep tee feels good
- Sleeves that sit close without gripping the arm.
- Soft and cotton-like, with a smooth face against the skin.
- Relaxed through the body, so it does not cling as you warm up.
- Bact-Out keeps it fresher between washes.
- Holds its shape and resists pilling.
Good to know
- Three colours: Black, Navy and Merlot. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Long Sleeve T-Shirt is a women's long sleeve sleep tee built for hot sleepers and for nights when you run warm. This moisture-wicking sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Long Sleeve T-Shirt
The Cool-jams NightCool Long Sleeve T-Shirt covers the arms without the heat that usually follows, which is the whole point when you run hot at night but the room is cold. The Kottinu knit is temperature-regulating: it wicks sweat off the skin, dries fast and keeps air moving through the sleeve. An odor-control finish helps the fabric stay fresher between washes. It is a lightweight knit cut relaxed through the body, so it layers under a robe or over a tank without bulk. In Black, Navy and Merlot, in sizes S to 3X.
Why wear long sleeves if I sleep hot?
Rooms and bodies do not always agree. A long sleeve in a fast-drying knit gives you coverage when the room is cold and keeps working if you warm up during the night.
Is this a top or a nightshirt?
It is a t-shirt style top, cut to be worn with a separate bottom. If you want a one-piece knee-length shirt, see the NightCool nightshirts.
Is it thin enough to layer?
Yes. It is a lightweight knit that layers under a robe or over a tank without bulk.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A short sleeve V-neck sleep tee with an open neckline, made to go with whatever NightCool bottom you already own.
Wear it for
- Hot flash nights. The open neck and the wicking knit work on the same problem from two directions.
- Mixing and matching. Wear it with NightCool pants, capris, shorts or joggers.
- Warm afternoons at home, where it passes as a regular top.
- Travel. Packs flat, washes out in a sink, dries fast.
- Sleeping cooler without a gown. Some women simply do not like a gown, and this V-neck pajama shirt is the answer.
Why this V-neck pajama top feels good
- The V sits low enough to keep your throat and chest in the air.
- Soft, cotton-like and smooth, with nothing scratchy at the seams.
- Cut relaxed, so it does not cling once you are warm.
- Bact-Out keeps it fresher between washes.
- Holds its shape and resists pilling.
Good to know
- Three colours: Black, Navy and Merlot. Sizes S to 3XL.
- Sold as a separate, so you can size the top and bottom differently.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool V-Neck Top is a short sleeve pajama shirt built for hot sleepers and for nights when you run warm. This moisture-wicking sleep top is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the V-Neck Top
The Cool-jams NightCool V-Neck Top is a short sleeve sleep top built around an open V neckline that leaves the throat and upper chest uncovered, which is what many women want on hot flash nights. The Kottinu knit wicks perspiration as it forms and dries fast, and an odor-control finish helps the fabric stay fresher between washes. The body is cut relaxed so it keeps fabric off the skin. Designed to mix with any NightCool bottom, in Black, Navy and Merlot, in sizes S to 3X.
Is a V-neck cooler than a crew neck?
It leaves more of the throat and upper chest uncovered, which is where many women notice a hot flash start, so most people find it feels cooler.
What bottoms go with this top?
Any NightCool bottom: pants, capris, joggers or shorts. The range is sold as separates so you can size each piece.
What colors does it come in?
Black, Navy and Merlot, in sizes S through 3X.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A women's sleep t-shirt with the in-between sleeve, for when short feels bare and long feels like too much.
Wear it for
- Spring and autumn nights, the ones that cannot decide what they are.
- Night sweats and hot flashes. It wicks and dries fast, whatever the season is doing.
- Everyday sleeping, with NightCool capris, shorts or pants.
- Around the house. It looks like an ordinary 3/4 sleeve top.
- Travel. Light, flat packing, quick drying.
Why this 3/4 sleeve pajama top feels good
- The scoop neck keeps your throat open to the air.
- 3/4 sleeves cover the shoulder without wrapping the whole arm.
- Soft, cotton-like and smooth, with a relaxed body.
- Bact-Out keeps it fresher between washes.
- Holds its shape and resists pilling.
Good to know
- Three colours: Black, Navy and Merlot. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Scoop Neck T-Shirt with 3/4 Sleeves is one of our sleep tops for women, built for hot sleepers and for nights when you run warm. This moisture-wicking 3/4 sleeve sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin as it forms and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Scoop Neck T-Shirt - 3/4 Sleeves
The Cool-jams NightCool Scoop Neck T-Shirt with 3/4 Sleeves is made for warm sleepers and warm nights that do not stay one temperature. The three-quarter sleeve covers the upper arm and stops clear of the wrist, so you are not pushing fabric up all night, and the scoop neck keeps the chest open. Kottinu fabric wicks sweat and dries fast, and an odor-control finish helps the fabric stay fresher between washes. Designed to mix with any NightCool bottom, in Black, Navy and Merlot, in sizes S to 3X.
What is a 3/4 sleeve?
It ends between the elbow and the wrist, covering the upper arm while leaving the forearm free.
Is this warmer than the short sleeve version?
Slightly, because of the extra sleeve, but the fabric is identical and still wicks and dries fast.
Does it match the NightCool bottoms?
Yes, the solid colors are shared across the NightCool range so tops and bottoms can be mixed.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A sleeveless tank top for sleep with a tulip hem, for the nights when the less you have on the better.
Wear it for
- The hottest nights of the year. Sleeveless, with a hem that moves instead of clinging.
- Night sweats and hot flashes. It wicks and dries fast.
- Summer travel. It takes up almost no room.
- Pairing. Wear this sleep tank with the matching tulip shorts or any NightCool bottom.
- Hot afternoons indoors.
Why this sleep tank top feels good
- Nothing on the shoulders or arms at all.
- The tulip hem falls away from the hip instead of gripping it.
- Soft, cotton-like and smooth against the skin.
- Bact-Out keeps it fresher between washes.
- It holds its shape and resists pilling.
Good to know
- Three colours: Violet, Navy and Island. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
Wake up cool and dry. The Cool-jams Women's NightCool Tulip Tank Top is a women's sleep tank top built for hot sleepers and for nights when you run warm. This moisture-wicking tank top is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Tulip Tank Top
The Cool-jams NightCool Tulip Tank Top is a cooling tank top for women who sleep hot, finished with an overlapping tulip hem that falls softly over the hip rather than cutting straight across it. It is sleeveless with a scoop neckline, so there is very little fabric holding heat, and the Kottinu knit wicks sweat and dries fast. An odor-control finish helps the fabric stay fresher between washes. Wear it to sleep or to lounge, in Violet, Navy and Island, in sizes S to 3X.
Is a tank top enough on a hot night?
For most hot sleepers it is the coolest top we make, because it leaves the arms and shoulders bare and uses the least fabric.
Does the hem cover the waistband?
The tulip hem falls over the top of the hip and covers the waistband of matching NightCool bottoms.
Can I wear it out of the house?
Yes, the tulip hem and scoop neck read as a regular tank, so it works for lounging as well as sleep.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Capri sleep pants: pant coverage that stops at the calf, which is often the difference between comfortable and too warm.
Wear it for
- Warm nights when you still want legs covered. Capri length lets your ankles do the cooling.
- Night sweats and hot flashes. It wicks and dries fast where you need it.
- Everyday sleeping, as sleep capris that go with any NightCool top.
- Travel. Light, quick to dry, easy to roll into a bag.
- Lounging. They pass for capri lounge pants at home, so the day can start in them.
Why these capri pajama pants feel good
- Elastic or drawstring waist, your choice, so the fit is yours.
- Relaxed through the leg with nothing gripping at the knee.
- Soft, cotton-like and smooth against the skin.
- Bact-Out keeps them fresher between washes.
- They keep their shape and resist pilling.
Good to know
- Five colours: Violet, Black, Dusk Blue, Navy and Merlot. Sizes S to 3XL.
- Pick elastic or drawstring at checkout.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Capri Pants are cooling capri pants built for hot sleepers and for nights when you run warm. These moisture-wicking pajama pants are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Capri Pajama Pants
The Cool-jams NightCool Capri Pants are women's capri sleep pants made for night sweats and hot flashes. The mid-calf length leaves the lower leg free, which is where a lot of heat escapes, while still covering more than shorts. You choose the waist when you order, elastic or drawstring, so the fit suits you rather than the pattern. The moisture wicking Kottinu fabric pulls sweat off the skin and dries fast, and an odor-control finish helps the fabric stay fresher between washes. Five colors, in sizes S to 3X.
Can I choose the waistband?
Yes. This style is sold with a choice of elastic or drawstring waist, selected when you order.
Why capris instead of full-length pajama pants?
Leaving the lower leg uncovered vents heat, so capris suit people who want more than shorts but find full-length pants too warm.
Can I mix these with other Cool-jams tops?
Yes. The NightCool bottoms and tops are sold separately and made to be mixed, so you can size each piece independently.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Full-length pants that stay light, for the sleepers who want to be covered and still not too warm.
Wear it for
- Cooler nights and cold bedrooms, without giving up the fabric that handles a hot flash later.
- Night sweats. The knit wicks and dries fast, so the pants are not damp behind the knee.
- Working from home. They look like lightweight lounge pants for women, because they are.
- Travel and shared rooms, where a gown is not enough cover.
- Pairing. Any NightCool top, in any of five colours.
Why these sleep pants for women feel good
- Choose an elastic or a drawstring waist, so nothing digs in at the middle of the night.
- Soft and cotton-like, not slippery and not clammy.
- Cut loose through the leg, so the fabric never sticks to you.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Five colours: Black, Navy, Merlot, Dusk Blue and Violet. Sizes S to 3XL.
- Pick elastic waist pajama pants or the drawstring version at checkout.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Pants are cooling sleep pants built for hot sleepers and for nights when you run warm. These moisture-wicking pajama pants are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Pajama Pants
The Cool-jams NightCool Pants are full-length, lightweight sleep pants for hot sleepers who still want their legs covered. The Kottinu knit wicks sweat off the skin and dries fast, so full-length coverage does not turn into overheating, and an odor-control finish helps the fabric stay fresher between washes. You choose the waist when you order, elastic or drawstring. They are cut straight through the leg with enough room to move, and they pair with any NightCool top since the range is sold as separates. Five colors, in sizes S to 3X.
Can I choose the waistband?
Yes. This style is sold with a choice of elastic or drawstring waist, selected when you order.
Are full-length pajama pants too hot for night sweats?
Not when the fabric moves moisture. Kottinu is a performance sleep knit that wicks and dries fast, so these stay comfortable where cotton pants would stay damp.
What tops go with them?
Any NightCool top. The range is sold as separates, so you can size the top and the bottom differently.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Soft sleep shorts: the least you can wear and still be wearing something.
Wear it for
- The hottest nights of the year, when even capris are too much.
- Night sweats and hot flashes. It wicks and dries fast where a hot sleeper needs it most.
- Summer travel. Lightweight sleep shorts take up no room at all.
- Pairing. Wear them under a gown or with any NightCool top.
- Warm afternoons, indoors, when the day is as hot as the night.
Why these sleep shorts for women feel good
- Elastic or drawstring waist, your pick, with nothing biting at the middle.
- Relaxed cut, so the leg never rides up and sticks.
- Soft and cotton-like, not slick and not clammy.
- Bact-Out keeps them fresher between washes.
- They keep their shape and resist pilling.
Good to know
- Three colours: Black, Navy and Merlot. Sizes S to 3XL.
- Pick elastic-waist or drawstring sleep shorts at checkout.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Shorts are cooling sleep shorts built for hot sleepers and for nights when you run warm. These moisture-wicking sleep shorts are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Pajama Shorts
The Cool-jams NightCool Shorts are cooling sleep shorts made for night sweats, and one of the lightest bottoms in the NightCool range, which makes them a usual choice for the warmest nights. You choose the waist when you order, elastic or drawstring. The Kottinu knit wicks sweat off the skin and dries fast, and an odor-control finish helps the fabric stay fresher between washes. Pair them with a NightCool tank or tee for the lightest full set. In Black, Navy and Merlot, in sizes S to 3X.
Can I choose the waistband?
Yes. This style is sold with a choice of elastic or drawstring waist, selected when you order.
Are shorts the coolest option for night sweats?
They put very little fabric on your legs. Pair them with a NightCool tank for one of the lightest full sets we make.
What tops match them?
Any NightCool top. The range is sold as separates so tops and bottoms can be sized independently.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Sleep joggers that stay where you put them, with a cuff at the ankle and no cord to dig in.
Wear it for
- Cooler nights. Full-length cover in a fabric that still handles a hot flash at two in the morning.
- Night sweats. It wicks and dries fast, even at the back of the knee.
- Working from home and quick errands. They read as joggers, so you can answer the door in them.
- Travel. Comfortable to fly in and easy to sleep in at the other end.
- Pairing. Five colours to match any NightCool top.
Why these jogger pajama pants feel good
- A covered elastic waist, so nothing presses on your middle while you sleep.
- Cuffed ankles keep the leg from riding up when you turn over.
- Soft, cotton-like and smooth, never clammy.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Five colours: Black, Navy, Merlot, Dusk Blue and Violet. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Elastic Waist Cuff Jogger Pants are women's sleep joggers built for hot sleepers and for nights when you run warm. These moisture-wicking pajama pants are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Elastic Waist Cuff Jogger Pants
The Cool-jams NightCool Elastic Waist Cuff Jogger Pants are jogger style pajama pants: a covered elastic waist, a relaxed leg and a cuffed ankle so the hem stays where you put it. That cuff is what people like when they run hot at night, because the leg can be pushed up and stays up. The Kottinu knit wicks sweat and dries fast, and an odor-control finish helps the fabric stay fresher between washes. Five colors, in sizes S to 3X.
Are cuffed joggers hotter than straight pajama pants?
Not usually, and many people find them cooler in practice because you can push the cuff up your calf and it stays there instead of falling back down.
Is the cuff tight on the ankle?
It is a soft cuff with give. It holds the hem without gripping.
Can I wear these as loungewear?
Yes, the jogger shape is the most street-ready cut in the NightCool range and works for lounging at home.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A tulip hem and a covered elastic waist, in the lightest thing we make for a hot night.
Wear it for
- The hottest nights. Minimal coverage and a hem that falls open instead of gripping the thigh.
- Night sweats and hot flashes. The fabric wicks and dries fast.
- Under a gown, if you like a layer without the heat.
- Summer travel. Lightweight pajama shorts that weigh nothing in a bag.
- Warm afternoons at home.
Why these tulip pajama shorts feel good
- The covered elastic waist has nothing hard against your skin.
- The tulip hem lets the leg move instead of binding it.
- Soft, cotton-like and smooth.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Three colours: Violet, Navy and Island. Sizes S to 3XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
Wake up cool and dry. The Cool-jams Women's NightCool Elastic Waist Tulip Shorts are elastic waist pajama shorts built for hot sleepers and for nights when you run warm. These moisture-wicking sleep shorts are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Elastic Waist Tulip Shorts
The Cool-jams NightCool Elastic Waist Tulip Shorts use an overlapping tulip hem, where the panels cross at the outer thigh so the leg opening is wider and moves more freely than a closed straight hem. They are a good pick for anyone who overheats at night and finds a straight-cut sleep short restrictive. The waist is elastic, and the Kottinu knit wicks sweat and dries fast, with an odor-control finish that helps the fabric stay fresher between washes. In Violet, Navy and Island, in sizes S to 3X.
What is a tulip hem?
The hem overlaps at the outer thigh like the petals of a tulip, so the leg opening is wider and moves more freely than a closed straight hem.
What top goes with these?
The NightCool Tulip Tank Top is the matching piece, and any NightCool top works since the range is designed to mix.
What sizes do they come in?
Sizes S through 3X, in Violet, Navy and Island.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Wide leg sleep pants, so the fabric never touches more of you than it has to.
Wear it for
- Hot nights when you still want to be covered. The wide leg keeps air moving around you.
- Night sweats and hot flashes. It wicks and dries fast, all the way down.
- Evenings at home. They look like wide leg lounge pants, because they are.
- Travel. Comfortable on a plane and fine to be seen in at the airport.
- Pairing. Any NightCool top.
Why these wide leg pajama pants feel good
- An adjustable drawstring waist, so these women's drawstring pajama pants sit where you want them.
- The wide leg drapes instead of wrapping.
- Soft, cotton-like and smooth against the skin.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Two colours: Violet and Black. Sizes S to 3XL, in a short size run.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Women's NightCool Drawstring Waist Wide Leg Pants are wide leg pajamas built for hot sleepers and for nights when you run warm. These moisture-wicking pajama pants are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for women.
More about the Drawstring Waist Wide Leg Pants
The Cool-jams NightCool Drawstring Waist Wide Leg Pants are cut generously through the leg, which is the point: a wide leg moves air with you instead of sitting against the skin, so they suit women who sleep hot. The drawstring waist lets you set the fit exactly. The Kottinu knit wicks sweat and dries fast, and an odor-control finish helps the fabric stay fresher between washes. This style comes in combined sizes, S-M, L-XL and 2X-3X, in Violet and Black.
How do the combined sizes work?
This style comes in S-M, L-XL and 2X-3X rather than single sizes. The drawstring waist and the wide leg give the range within each size, so you adjust rather than sizing exactly.
Why a wide leg for sleepwear?
Air moves through a wide leg as you move, which helps if you overheat. It also means nothing grips the calf or thigh when you turn over.
Can I wear these outside the bedroom?
Many customers wear them as lounge pants. The drawstring waist and clean drape read as loungewear rather than obvious pajamas.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats, hot flashes, menopause
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
A plain crew neck men's sleep tee, in a fabric that deals with the sweat instead of holding it.
Wear it for
- Hot sleepers and night sweats. It pulls sweat off your skin and dries fast, so you are not waking up soaked.
- Warm bedrooms and summer. Cut loose, with airflow through the body.
- Travel. Rinse it out at night and it is dry in the morning.
- Around the house. This men's pajama t-shirt looks like an ordinary tee, because it is shaped like one.
- Pairing. Wear it with NightCool pants, shorts or boxers.
Why this men's sleep t-shirt feels good
- Soft and cotton-like, with none of the slick feel people expect from a performance fabric.
- The body falls away instead of clinging when you get warm.
- The crew neck sits flat, with no tag scratching at the back.
- Bact-Out keeps it fresher between washes.
- It holds its shape and resists pilling.
Good to know
- Two colours: Navy and Black. Sizes M to 2XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Men's NightCool Crew Neck T-Shirt is a men's pajama shirt built for hot sleepers and for nights when you run warm. This men's moisture-wicking sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for men.
More about the Crew Neck T-Shirt
The Cool-jams NightCool Crew Neck T-Shirt is a cooling sleep t-shirt for men with night sweats. The Kottinu knit pulls perspiration off the skin as it forms and dries fast, so the shirt does not stay wet against your back, and an odor-control finish helps the fabric stay fresher between washes. It is cut as a standard crew neck tee, relaxed through the body and shoulder, which is why customers wear it for travel and the gym as well as for sleep. In Navy and Black, in sizes M to 2X.
Can I wear this outside bed?
Yes. It is cut like a normal crew neck tee, and the fabric performs the same way in a gym or on a plane as it does in bed.
Is it good for night sweats?
That is what it was built for. Kottinu wicks moisture off the skin and dries fast, which is the property that matters when you sweat in your sleep.
What bottoms match it?
The NightCool Pants and the NightCool Boxer Shorts in the men's range.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Sleeveless men's cooling sleepwear, for the sleepers who run hottest.
Wear it for
- The hottest nights. Nothing on the shoulders and nothing on the arms.
- Night sweats. The knit wicks and dries fast, so the sheets stay drier too.
- Summer travel. Light, flat packing, quick drying.
- Layering under a tee, if you sleep cold and wake hot.
- Pairing. Wear it with NightCool pants, shorts or boxers for a full set of men's pajamas for hot sleepers.
Why this men's sleep tank top feels good
- A relaxed cut that does not cling once you warm up.
- Soft, cotton-like and smooth, not slippery.
- Armholes cut for movement, so they do not rub when you turn over.
- Bact-Out keeps it fresher between washes.
- It holds its shape and resists pilling.
Good to know
- Two colours: Navy and Black. Sizes M to 2XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Men's NightCool Tank Top is the sleeveless piece in our men's moisture wicking pajamas, built for hot sleepers and for nights when you run warm. This moisture-wicking sleep shirt is made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for men.
More about the Tank Top
The Cool-jams NightCool Tank Top is a sleeveless cooling sleep tank for men who run hot at night. It is the lightest of the men's sleepwear tops in the NightCool range, leaving the arms and shoulders bare, and the Kottinu knit wicks sweat off the skin and dries fast. An odor-control finish helps the fabric stay fresher between washes. It is cut relaxed through the body with a standard tank armhole, so it is easy to sleep in and easy to layer. In Navy and Black, in sizes M to 2X.
Is a tank the coolest option for men?
It is the lightest top we make for men, because it removes the sleeves entirely. Pair it with NightCool Boxer Shorts for the coolest combination.
Is the armhole cut low?
It is a standard tank armhole, not a dropped or cut-away athletic armhole.
What bottoms match it?
The NightCool Pants and the NightCool Boxer Shorts in the men's range.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Men's lightweight sleep pants in a full length that covers you without cooking you.
Wear it for
- Cooler nights and cold bedrooms, in a fabric that still handles a hot spell at 3 a.m.
- Night sweats. It wicks and dries fast, including behind the knee.
- Working from home, where they pass as men's lightweight lounge pants.
- Travel and shared rooms, when you want to be properly covered.
- Pairing. Any NightCool top.
Why these men's sleep pants feel good
- Cut loose through the leg, so nothing sticks as you move.
- Soft, cotton-like and smooth against the skin.
- A waistband that sits flat and stays put.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Two colours: Black and Navy. Sizes M to 2XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Men's NightCool Pants are men's sleepwear pants built for hot sleepers and for nights when you run warm. These moisture-wicking pajama pants are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for men.
More about the Pajama Pants
The Cool-jams NightCool Pants are cooling pajama pants for men who run hot at night and still want full-length coverage. The Kottinu knit wicks sweat off the skin and dries fast, so covered legs do not mean an overheated night, and an odor-control finish helps the fabric stay fresher between washes. The waistband is soft and elastic, and the leg is cut straight with room to move, so they double as men's loungewear pants. It is designed to be worn with the NightCool Crew Neck T-Shirt or Tank Top, both cut from the same fabric. In Black and Navy, in sizes M to 2X.
Are full-length pants too warm if I sleep hot?
Not in a performance knit. Kottinu moves moisture and keeps air flowing, so the length adds coverage without the heat you get from cotton or flannel.
What is the men's size range?
The men's NightCool range runs M through 2X.
What tops match them?
The NightCool Crew Neck T-Shirt and the NightCool Tank Top in the men's range.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
Men's boxers for sleeping: the layer closest to you, in the fabric that matters most there.
Wear it for
- Hot sleepers and night sweats. It wicks and dries fast where you feel it first.
- Summer nights. Men's cooling sleep shorts, worn on their own when anything else is too much.
- Under NightCool pants, on the nights you want both.
- Travel. Light enough to pack several and quick to wash out.
- Around the house, first thing and last thing.
Why these men's sleep shorts feel good
- A relaxed fit that does not bind or ride up.
- Soft, cotton-like and smooth, with flat seams.
- The waistband sits without digging in.
- Bact-Out keeps them fresher between washes.
- They hold their shape and resist pilling.
Good to know
- Two colours: Navy and Black. Sizes M to 2XL.
- Machine wash cold or warm on a gentle cycle, tumble dry low or hang to dry. No bleach, and skip fabric softener and dryer sheets: they coat the microfibres and can reduce wicking.
- Made in Thailand by the same factory partner Cool-jams has worked with since the beginning.
- Sleep in it for 30 nights. Not right? Send it back for store credit or a refund.
Wake up cool and dry. The Cool-jams Men's NightCool Boxer Shorts are men's sleep shorts in a boxer cut, built for hot sleepers and for nights when you run warm. These moisture-wicking boxer shorts are made from our proprietary Kottinu fabric, which pulls perspiration off your skin and dries fast, so you stay comfortable all night.
Part of the Cool-jams NightCool collection of cooling sleepwear for men.
More about the Boxer Shorts
The Cool-jams NightCool Boxer Shorts are cooling sleep boxers for men with night sweats. The Kottinu knit wicks perspiration off the skin as it forms and dries fast, which is the difference between waking up damp and waking up comfortable, and an odor-control finish helps the fabric stay fresher between washes. The waistband is soft and elastic, the leg is cut roomy, and there is no bunching at the thigh when you turn over. In Navy and Black, in sizes M to 2X.
Are these underwear or sleepwear?
They are cut as sleep boxers, designed to be worn on their own in bed. The roomier leg and soft waistband are built for sleeping rather than for wearing under trousers.
Do men get night sweats too?
Yes, and it is common. These are cut from the same Kottinu performance fabric as our women's night sweat range.
What top goes with them?
The NightCool Crew Neck T-Shirt and the NightCool Tank Top are the matching pieces in the men's range.
What is Kottinu?
Kottinu, a technical synthetic (engineered polyester microfiber) made for firefighter base layers and medical scrubs, now crafted for hot sleepers and night sweats needing moisture-wicking and cooling pajamas. Soft and smooth with a cotton-like feel, it pulls sweat off your skin, dries fast, carrying body heat away with it.
A Bact-Out finish helps the fabric resist odor, so it stays fresher between washes. Kottinu resists pilling, holds its shape, and machine washes easily.
NightCool
Hot sleepers, night sweats
How to care for Kottinu
- Machine wash cold or warm with like colors, gentle cycle
- Skip fabric softener and dryer sheets, they coat the microfibers and can reduce wicking
- Tumble dry low or hang to dry, Kottinu dries fast
- No bleach
- Holds its shape and resists pilling wash after wash
Where it is made
Every NightCool piece is made in Thailand by the same factory partner Cool-jams has trusted since day one.
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Night sweats?
Night sweats?
NightCool fabric
NightCool fabric
Fresh between washes
Fresh between washes
Sleep in it first
