Introducing the UltraCool Comforter for a cool, comfortable sleep. Featuring cooling nylon/spandex and NASA-engineered fiberfill for year-round comfort. Comes in two-weights: Lightweight for the hottest sleepers and All-Season for those who prefer a little more weight.
Free Shipping: All U.S. orders are shipped right to your door, free of charge. Orders are typically shipped within 24 business hours.
30 Night Risk Free Trial: 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!
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*Final Sale items and colors are not eligible for return, exchange, or the 30 Night Trial Period.
Find the perfect solution for your needs
Cool-To-The-Touch Outer Fabric + Cooling Fill
Airy Breathable Cotton + Cooling Tech
Eye-Catching Textured Design + Cooling Tech
| UltraCool Comforter | Performance Cotton Comforter | Textured Blanket - Final Sale | |
|---|---|---|---|
|
Outer Fabric
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Cooling Nylon | 100% Cotton | 100% Textured Polyester |
|
Fiber Fill
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50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill | 50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill | 50% Outlast® ClimaDry polyester fiberfill / 50% polyester fiberfill |
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Colors
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White, Navy, & Sand | White | Lunar & Pewter |
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Weight Options
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Lightweight & All-Season | Lightweight & All-Season | Lightweight |
Proactive temperature management
Reactive Cooling
Traps Heat & Moisture
| Us | Moisture-Wicking Fabrics | Traditional Fabrics | |
|---|---|---|---|
|
Prevents Sweat Build-Up
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✓ | — | — |
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Manages Hot & Cold Sleepers' Needs
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✓ | — | — |
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Cool To The Touch
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Exceptional | Moderate | Poor |
We've helped over 30,000 sleepers unlock their best rest yet. See why customers and the press are calling our products a dream come true. Read all reviews
"For truly hot sleepers, leave it to NASA engineering to figure out a way to help you finally stay cool at night."Real Simple
Overall rating: 4.5083055 / 5 from 301 reviews.
The UltraCool Comforter offers a cool, comfortable sleep experience with its cooling nylon/spandex and NASA-engineered fiberfill. Customers praise its temperature regulation, smooth fabric, and perfect weight for warmer months. However, opinions on the cover and look are mixed.
Review topics: ["size","color","weight","comforter","replacement","fabric","quality","problem","material","customer service","looks","sheets","feel","finish","cover","bed","husband","texture","temperature","sleep","improvement","heat","details","solution","use","set","price","works","blanket","nights"].
"Ordered this after reading all the reviews and honestly, I’m impressed. My partner is a really hot sleeper, so finding a blanket that works for both of us has been tough. We sized up and got a king for our queen bed, and it’s been the best decision. It's comfortable and breathable."
"My husband and I have been considering getting a "cooling" comforter for a while but we were skeptical. We are now so glad that we did! It is cool to the touch, and the material is much softer than I was expecting (not crinkly like I feared). We have cats and I was also worried that their claws might pull on the fabric, but so far it still looks new."
"The feel of this blanket is amazing. For me, this engineered solution works better than an all natural bamboo/tencel duvet/duvet insert that I also tried - this and that were top AI recommendations for people with night sweats, but that one gets uncomfortably hot in 70 degrees temperatures and leads to more episodes of night sweats than this one."
"Super nice comforter. Its cool, lightweight and has a very smooth feel. My only gripe is that I like to use a duvet cover, and since this comforter only has tie-ins for the cover in the corner I find that it will shift within the cover; leaving one side bunched up and the other without the comforter. I think additional tie-ins halfway up the sides would alleviate this issue."
"This comforter is extremely cozy and cooling. I wouldn’t recommend putting it inside a duvet cover (although I haven’t tried it) but I feel you’d lose the cooling technology. It’s got a little weight to it but nothing crazy. I’m sleeping so well!"
"It's absolutely amazing. Not only is the comforter cool to the touch, but it doesn't wrinkle no matter how much I chilly chill in it. I'm finally able to sleep through the nite and no longer sleepy or groggy in the afternoons. I'm glad I did my homework and paid a very reasonable price for a top quality product. Thank You Slumber Cloud!! A D from NY"
"My partner is a super hot sleeper - originally we tried the lightweight ultra cool comforter, but we swapped it for the all-season one and this feels like the right balance. It's not a complete magic bullet in terms of eliminating night sweats on its own, but it is a good middle ground for us since I tend to be cooler at night."
"This comforter is so silky to the touch, and it keeps me cool all night. It has helped with night sweats. I highly recommend it if you’re a hot sleeper. You can feel the quality as soon as you put it on the bed."
"I purchased this in September 2025 and I haven't used it much because of the smell. I washed it 3-4 times and the chemical smell is still there, you can smell it through the comforter cover. After my kitten takes a nap on it she smells like a "made in China" plastic thing. I don't think it's safe for her or me so I decided to toss it. I can wash it 10 times and it will still smell."
"such a plush and cool feel, great for hot sleepers"
