Black Cool-jams NightCool Long Sleeve T-Shirt for women, for women who sleep hot
Navy Cool-jams NightCool Long Sleeve T-Shirt for women, lifestyle view, made for night sweats
Navy Cool-jams NightCool Long Sleeve T-Shirt for women, lightweight cooling sleepwear
Merlot Cool-jams NightCool Long Sleeve T-Shirt for women, for summer nights and year-round hot sleepers
Black Cool-jams NightCool Long Sleeve T-Shirt for women, for women who sleep hot
Navy Cool-jams NightCool Long Sleeve T-Shirt for women, made for night sweats
Merlot Cool-jams NightCool Long Sleeve T-Shirt for women, lightweight cooling sleepwear
Cool-jams sleepwear size chart: how to measure neck, chest, sleeve, waist, hips and body length, with sizes S to 3X
Cool-jams sleepwear size chart: how to measure neck, chest, sleeve, waist, hips and body length, with sizes S to 3X

Women's NightCool Long Sleeve T-Shirt

4.5
Rated 4.5 out of 5 stars
187 Reviews
Regular price$60
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Free U.S. shipping on all orders $120+

Wake up cool and dry. The Cool-jams Women's NightCool Long Sleeve 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 in minutes, 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 in minutes 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.

Why you'll love it

  • Long sleeves for full coverage without giving up cooling performance
  • Kottinu moisture-wicking fabric that wicks perspiration and dries quickly, engineered for night sweats and hot flashes
  • Soft, cotton-like feel that resists pilling and holds its shape
  • Bact-Out finish helps the fabric stay fresher between washes
  • Mix and match with any NightCool bottom for a complete long-sleeve sleep set

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 in minutes, 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.

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.

  • Shipping. Free on Continental U.S. orders over $120. Ships in about a business day, arrives in 3 to 7. We ship across the U.S. and Canada.
  • Returns. 30 days from delivery. Start at our Returns Center with your order number and print a prepaid label. Gifts without an order number, orders from outside the U.S., and anything faulty: email [email protected].
  • Exchanges. Free within the same 30 days, no admin fee.
  • Refunds. Full-price store credit with no fee, or your original payment method less a $9.95 admin fee.
  • 30-Night Cool Sleep Trial. Sleep in NightCool. Wash it. Not right? Send it back within 30 nights for store credit or a refund.
  • DayBasics is Final Sale. No returns or exchanges as we retire the collection. Faults are always covered.
  • Read the full returns and exchanges policy.

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Customer Reviews

4.5
Rated 4.5 out of 5 stars
Based on 187 reviews
87%would recommend these products
187 reviews
  • PM
    Peggy m.
    Flag of United States
    Verified Buyer
    Reviewing
    Women's DayBasics Long Sleeve Cuffed Pajama Set
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    nEW jAMS

    Love the softness of these pjs. This was my 5th set. They come in pretty colors. My only complaint is that this set is a bit smaller than the others. I like the roomier fit better.

  • CL
    Cara L.
    Flag of United States
    Verified Buyer
    Reviewing
    Women's DayBasics Long Sleeve T-Shirt Top
    I recommend this product
    Rated 5 out of 5 stars
    5 months ago
    Great fit and feel

    Fabric feels nice and washes well, and sleeves are the perfect length.

  • JL
    Johanna L.
    Flag of United States
    Verified Buyer
    Reviewing
    Women's DayBasics Long Sleeve Drawstring Pant Pajama Set
    I recommend this product
    Rated 4 out of 5 stars
    6 months ago
    Love the fabric. Wish you'd ditch the drawstring at the waist.

    Drawstring at waist is much too bulky. Please make the bottoms with the option of requesting with an elastic waist, like some I have that were purchased a long time ago. The drawstring is simply too bulky.

  • DD
    Diane D.
    Flag of United States
    Verified Buyer
    Reviewing
    Women's DayBasics Long Sleeve T-Shirt Top
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    The best pajamas!

    I will never sleep in anything but Cool Jams again (and haven’t for at least four years now). I sleep hot, even in the winter, and these keep me feeling cuddled and cool at the same time. The best!

  • R
    Roni
    Reviewing
    Women's DayBasics Long Sleeve Drawstring Pant Pajama Set
    I recommend this product
    Rated 5 out of 5 stars
    6 months ago
    5 Stars

    Incredible. My friend recommended these to me and I have never been so happy to spend hundreds of dollars on pajamas. My nights are considerably more comfortable now and I am so thankful.