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STAY COOL Sleepwear - Women's Top

Created with Dagsmejan, our sleepwear blends eucalyptus fibers and Nattcool™ tech for coolness and moisture control, as smooth as silk and easy to care for.

- NATTCOOL™ fabric is cooler than linen, softer than silk, and better at moisture management than cotton

- 8x more breathable than cotton

- Oeko-Tex Standard 100 Certified Technology

- Tagless design with flat, ergonomically placed seams

- 92% Microlyocell from eucalyptus and 8% Elastane/Lycra NATTCOOL™ fabric

S
Chest - 33” - 35”
Waist - 26” - 29”

M
Chest - 36” - 38”
Waist - 29” - 31”

L
Chest - 38” - 41”
Waist - 32” - 34”

XL
Chest - 41” - 44”
Waist - 35” - 38”

XXL
Chest - 45” - 47”
Waist - 38” - 42”

Basic Care:
Machine wash cold water on a gentle cycle with a mild detergent and with like colors only. Do not use fabric softener. Only use non-chlorine bleach when needed. Tumble dry low heat until completely dry.

All U.S. orders are shipped right to your door, free of charge.

Sleep on it, wash it, and really put it to the test for 30 nights! If you don’t love your new bedding, just return it for a full refund. No questions asked!

*Final Sale items and colors are not eligible for return, exchange, or the 30 Night Trial Period.

Why You'll Love It:

We've partnered with Swiss sleepwear start-up Dagsmejan to launch sleepwear developed with NATTCOOL™ technology.

Exceptional Breathability

Excess body heat is released through the fabric keeping you cool.

Ultra Cooling

Evaporative cooling ensures you don't overheat.

Fast Drying

Sweat is pulled away from the skin and is quickly released through the fabric keeping you dry.

A better night’s sleep because of science.

It’s a fabric designed for NASA spacesuits up where temperatures change by 500 degrees. We think it can handle your bedroom. Learn More

The Only NASA Bedding

Our bedding utilizes Outlast®, the world’s only textile technology to have received the Certified Space Technology™ quality mark by the renowned Space Foundation.

Reduces Sweat By 50%

Our bedding provides proactive heat and moisture management, clinically proven to reduce night sweats by up to 50%. *Outlast Humidity Sleep Study

Improves Deep Sleep By 20%

Our bedding adapts to the ideal temperature of both hot and cold sleepers, proven to decrease tossing & turning and increase sleep efficiency by 20%.*Outlast Heat Sleep Study

FAQs

Slumber Cloud products are designed to help manage heat and humidity build up. It is not an air conditioner with a set temperature degree, but it will react to your temperature all night long to reduce heat build up and manage temperature swings.

The Stay Cool Sleepwear generally fits true to size. We don't recommend sizing up or down from your standard sizing.

With 8% Lycra, the fabric does have some stretch, ideal for sleeping and lounging in!

The premium fabric has a super soft athletic hand-feel, with a little stretch to the fabric.

Overall rating: 4.766667 / 5 from 30 reviews.

AI Generated Review Summary

STAY COOL Sleepwear - Women's Top is praised for its eucalyptus fibers and Nattcool™ tech, providing a cool, moisture-controlled, and silky smooth experience. Customers highlight the fabric's softness and comfort, along with the top's roominess and coolness.

Summary topics

  • Fabric Comfort: 20%
  • Top Comfort: 25%

Review topics: ["color","fabric","packaging","shirt","topper","sleepwear","help","pajamas"].

Review highlights

  • "Pros: I love the smooth feel of the fabric, and that they used a very minimal stitching design I can barely feel."Tara R.
  • "Although I still run hot this top helps"Jane W.
  • "It’s a bit oversized but not too much to be baggy, and the fabric is silky soft and cool."Emily L.

Reviews

Nice

"It is working well, very light."

Sarah B. (5/5)

Cool top

"Really keeps me cool."

Kersti B. (5/5)

Looove “ Stay cool “ top

"I ordered the top together with the Stay cool shorts in color mist. The fabric is amazing as it feels cooling on the skin but more importantly , it helps stay cool t/o the night. No more waking up in middle of night with feeling hot & night sweats . BTW, color is nice & the fit of both top & bottom is very good. I have to admit that I started off with the performance matress pad a month ago that alrdy made a difference with feeling much cooler overall at night. Then I got this Stay cool PJ set which I also loved . And finally I ordered the essentials sheet set & essential duvet cover to have the complete package. Now I sleep like a baby 🙏. I highly recommend the Slumber cloud product line. The prices are on the higher side but it does so much more than your regular bed sheets. For me , it was a game changer."

Inge T. (5/5)

Amazing

"Cool, silky, smooth, comfortable, very well made"

Larissa L. (5/5)

Top runs big but love

"Top runs big but love how light weight it is"

Sumi G. (5/5)

Perfection

"The most comfortable pajamas I own and noticeably cooler than anything else I've found!"

Rebecca H. (5/5)

Sleepwear

"Love my slumbercloud sleepwear, very cool and comfortable."

Rhonda K. (5/5)

as i expected

"as i expected"

David C. (5/5)

Very cool!

"Pros: I love the smooth feel of the fabric, & that they used a very minimal stitching design I can barely feel. Super comfortable to wear! Cons: No colors to choose from & this green/grey is ugly as well as see-through... definitely can't accept packages at the door in this light color... I wish they'd make it in navy or black... I also bought the 2X so it fit loose... but it's none too loose & it can't be called "oversized" AT ALL. 2X is more like XL, just fair warning to my fellow big busted gals out there who prefer roomy tops when they sleep..."

Tara R. (4/5)

Great shirt

"I get too hot during the night with regular PJs but this shirt keeps my temperature at a steady level."

Tracie J. (5/5)

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