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Check out [Save More When You Bundle](https://mellowsleep.com/pages/shop)• [Up to 50% Off Sitewide](https://mellowsleep.com/pages/shop)• ## Best Sellers [](https://mellowsleep.com/products/cloud-alignment-pillow "CloudAlign Pillow") BESTSELLER [](https://mellowsleep.com/products/mellow-hotel-pillow "Waterproof & Stain-Resistant Hotel Pillow") [](https://mellowsleep.com/products/marshmellow-comforter "MarshMellow Comforter") BESTSELLER [](https://mellowsleep.com/products/mellow-flex-pillow "Flex Pillow") [](https://mellowsleep.com/products/waterproof-stain-resistant-hotel-pillow-copy "Waterproof & Stain-Resistant Hotel Pillow (2-Pack)") [](https://mellowsleep.com/products/cloudalign%E2%84%A2-pillow-2pk-bundle "2 CloudAlign Pillows + 2 Free Cooling Pillowcases") BESTSELLER SUMMER SALE $50 OFF NOW! 02 HRS : 19 MIN : 57 SEC  Finally Sleep Cool Through the Night The CloudCool™ Comforter's wood-pulp fill releases your body heat all night, instead of quitting after ten minutes like other "cooling" comforters. "I'm in love. It keeps us both cool in the 90 degree heat, it makes me want to go to bed early." — Amanda R. CLAIM YOUR $50 OFF! AS SEEN IN  Cooling Comforter MT from Mellow Sleep on Vimeo  Playing in picture-in-picture Play  Made From Wood Pulp Naia™ certified  Stays Cool All Night Releases heat instead of trapping it  Award Winning Innovation in Sleep Award  Rated 5 Stars By 99% of customers  Inside Is CloudCool™ Cooling Technology The fill is Naia™, a soft fiber made from wood pulp. Wood-pulp fibers breathe in a way plastic-based fills can't: air moves through them all night, carrying your body heat and moisture out instead of letting it build up under the blanket. That's the difference between a comforter that feels cool for ten minutes and one that keeps you cool until morning. You'll Feel The Difference On Night One Climb in, and the silky side feels cool the second you touch it. Stay in, and CloudCool keeps the heat from building up. You sleep through the night and wake up dry.  ORDER COOLING COMFORTER NOW  **YOU'LL NEVER GO BACK!** Where Science & Comfort Meet Most "cooling" comforters are ordinary synthetic blankets with a cold-feeling coating. They feel icy for the first ten minutes, then the coating warms up against your body and the blanket spends the rest of the night trapping your heat. That's why you've been let down before. Here's the thing: your body has to cool down to fall asleep, and stay cool to stay asleep. Any comforter that holds your heat in is working against you all night. The Mellow Cooling Comforter works differently. One side is silky and **cool the instant your skin touches it**, for immediate relief when you climb in already hot. And underneath, the breathable Naia™ wood-pulp fill keeps air moving so heat and moisture escape hour after hour, not just at first touch. **The result is one comforter that cools you twice: instantly when you get in, and continuously while you sleep. If you've sworn off "cooling" products that quit after ten minutes, this is the one that changes your mind.** **LIGHT ON HEAT** Light Enough That It Never Weighs You Down A thick, heavy comforter is exactly what cooks a hot sleeper. This one is light, so it never smothers you. It still drapes and feels like a real comforter, not a thin summer sheet. And it stays that way. The fill washes evenly and fluffs back up in the dryer, so it keeps its loft instead of going flat or lumpy. **TWO COMFORTERS IN ONE** Pick Your Side, Every Night Both sides keep you cool. The silky side is cool the instant your skin touches it, for nights you climb in already running hot. Flip it over and the knit side feels like your favorite soft t-shirt: gentle, breathable, cozy without the heat. Sized to fit: Twin/Twin XL 68"×90" · Full/Queen 90"×90" · King/Cali King 90"×106"   **COOL ISN'T JUST COMFORT** Sleep Through The Night, Wake Up With Energy Your body has to cool down to fall asleep and stay asleep. CloudCool™ Cooling Technology helps it do exactly that, all night. And staying cool doesn't just feel good. It helps relieve the problems that come with sleeping hot:  Waking up drenched from night sweats  The 3am wake-up to kick off the covers  Tossing and turning to find a cool spot  Dragging through the next day exhausted  Sweat-soaked sheets and pillowcases The Mellow Cooling Comforter leaves you feeling better after a night of sleep, not worse. **PREMIUM MATERIALS** Certified Safe, Gentle Enough For A Baby's Skin The fiber inside is Naia™, made from sustainably sourced wood pulp. It's independently tested and OEKO-TEX® certified, which means it's proven safe from hundreds of harmful substances and gentle enough for long-term contact with sensitive skin. It's hypoallergenic, 100% vegan with no feathers or animal products, and the whole comforter goes straight in the washing machine. No duvet cover, no dry cleaning, no special care.  What A Cooling Comforter Should Do Lets your heat escape Mellow Others Lets your heat escape ✓ × Cool all night, not just 10 minutes ✓ × Two cool sides to flip ✓ × Light & breathable but cozy ✓ × Wood-pulp fiber, OEKO-TEX® certified ✓ × Machine washable ✓ × Over 99% 5-star reviews ✓ × Award-winning ✓ × Made For Every Kind Of Hot Sleeper  Menopausal sleepers When a hot flash hits, flip to the icy side. When it passes, flip back to the cozy side.  Fan-dependant sleepers No more fan blasting all night, your partner will wish you got a CloudCool™ comforter earlier!  The "been- _burned_" sleeper Unlike the "cooling" comforters collecting dust in your closet, this one actually stays cool all night. 99% Of Customers Give It 5 Stars Out of more than 2,000 reviews. If you've tried other cooling comforters and been let down every time, this is the one. Slide 1 of 5 ★★★★★ "I took it on vacation with us lol my husband thought I was crazy but I love it!" Pam B. · Verified Buyer ★★★★★ "I finally swapped my big comforter for this. I'm in love!! Keeping us both cool in the 90 degree heat. It makes me want to go to bed early." Amanda R. · Verified Buyer ★★★★★ "It is such good quality I would have paid $200+ for this!" Meagan G. · Verified Buyer ★★★★★ "I love the cooling effect and the material feels so soft and luxurious." Rosalie C. · Verified Buyer ★★★★★ "I'm in love! I can't sleep without it now. Thank you!" Vicky P. · Verified Buy ★★★★★ "I took it on vacation with us lol my husband thought I was crazy but I love it!" Pam B. · Verified Buyer ★★★★★ "I finally swapped my big comforter for this. I'm in love!! Keeping us both cool in the 90 degree heat. It makes me want to go to bed early." Amanda R. · Verified Buyer ★★★★★ "It is such good quality I would have paid $200+ for this!" Meagan G. · Verified Buyer ★★★★★ "I love the cooling effect and the material feels so soft and luxurious." Rosalie C. · Verified Buyer ★★★★★ "I'm in love! I can't sleep without it now. Thank you!" Vicky P. · Verified Buy ★★★★★ "I took it on vacation with us lol my husband thought I was crazy but I love it!" Pam B. · Verified Buyer ORDER COOLING COMFORTER NOW  **WHY WE BUILT IT** A Bedding Company That Took Hot Sleepers Seriously Bedding is what we do at Mellow. And the most common thing we heard from sleepers was the same story: every "cooling" blanket they tried felt cold in the store and hot by midnight. So instead of adding a cold coating to an ordinary blanket, we rebuilt the inside. We chose Naia™, a breathable fiber made from wood pulp, because it moves heat and moisture out all night instead of trapping it. Then we gave it two cool sides, kept it light, and made the whole thing machine washable. That comforter went on to win the Innovation in Sleep Award at the SleepTech Summit, and more importantly, 99% of the people who sleep under it give it five stars. Your Satisfaction Is Our Priority Try it risk free. If you don't love it, we'll fix it.  30-Night Trial Sleep on it. Not for you? Send it back.  Lifetime Warranty Backed for the life of the comforter.  Responsibly Made Wood-pulp fiber, sustainably sourced.  Quality Promise Every step controlled for quality.  Real Human Support Real people, quick to help.  Free Shipping On all orders over $120. Slide 1 of 9                    "I ordered from three different brands that all claimed to have the ‘best’ cooling comforter. The moment I unboxed them, Mellow stood out right away. The quality was obvious. After just a few nights of sleep, there was no question in my mind. This one’s the winner." Emily K. Verified Customer Slide 1 of 0 3,804 reviews (3,804) CloudCool Cooling Comforter $79.99 $119.99 Savings based on comparable value. Learn more Select Color: White Select Size: Size Guide Twin/Twin XL Full/Queen King/Cali King  Voted #1 Cooling Comforter  Dual Layer - Arctic Silk Side + CloudKnit Side  OEKO-TEX® Certified & Naia™ Sustainable Filling  Hypoallergenic, Antibacterial & 100% Vegan  Fully Machine Washable Our dual-sided comforter delivers instant cool-to-the-touch relief with a silk-smooth finish on one side, and breathable, cloud-soft knit on the other. Designed to regulate temperature and wick away heat, it keeps you balanced and comfortable all night long. BUY MORE - SAVE MORE Just The Comforter Cooling Comforter $79.99 $119.99 ColorSize White Twin/Twin XLFull/QueenKing/Cali King Comforter + 1 Cloud Pillow Save $119.99! $100.00 $219.99  CloudCool Cooling Comforter ColorSize White Twin/Twin XLFull/QueenKing/Cali King $60.00$119.99 [](https://mellowsleep.com/products/cloud-alignment-pillow?variant=47481135857917) [CloudAlign Pillow](https://mellowsleep.com/products/cloud-alignment-pillow?variant=47481135857917) ColorSize White RegularHigh $40.00$100.00 \+ 1 Cooling Pillowcase (Protect & Cool) $10.00 $19.99 BEST VALUE Comforter + 2 Pillows Save $188.99! $131.00 $319.99  CloudCool Cooling Comforter $56.00$119.99  2xCloudAlign Pillow $75.00$200.00 +2 Cooling Pillowcases (Protect & Cool) $20.00 $39.98 Add to Cart Out of Stock  30-day trial  hassle-free returns Overview Materials FAQ Care  “This is literally the softest comforter you'll ever own. I purchased it for the functionality, but when I got it, I was blown away by the material and softness. Don't doubt, mellow, just get it.” Tara M. Verified Customer reviews widget Be the first to write a review  Vicky P.Verified 9/19/2025 I’m in love! I can’t sleep without it now Thank you!  Pam B.Verified 9/19/2025 I took it on vacation with us lol my husband thought I was crazy but I love it!  Meagan G.Verified 9/19/2025 It is such good quality I would have paid $200+ for this!  Vicki F.Verified 9/25/2026 I absolutely love my comforter. It was super soft and fluffy!! It couldn’t be better for me! Item type: Pink / King/Cali King  Johnna B.Verified 9/24/2026 I love the Mellow Cooling blankets so much I have ordered one for my sister and one for my best friend Item type: White / Full/Queen  Liam M. 9/23/2026 We’ve all been fooled about the “cooling blanket” gimmick with other products, but I’m here to tell you, this definitely does as advertised! We bought it with the pillows and sheets and it has been the best sleep I’ve gotten in years. It works perfectly when it’s warmer out. I’m naturally a hot sleeper and find myself usually sweating in the night with a sheet and fan on me, but with this I stay perfect all night!  Nereyda C.Verified 9/23/2026 Keeps us cool throughout the night. Item type: Navy / King/Cali King  Judy Anne B.Verified 9/18/2026 Very soft and really does the cooling effect! Item type: Dawn / Full/Queen  Caroline K.Verified 9/18/2026 Bought the big fluffy comforter absolutely love it but it kept us to warm for the summer. Bought the cooling comforter and it does just that. Item type: Lavender / Full/Queen  Tonia C.Verified 9/18/2026 so light, white and comfy!!! Item type: White / Full/Queen  Lori Y.Verified 9/16/2026 I love my blanket it is so comfortable Item type: Sand / King/Cali King  Shirla E.Verified 9/16/2026 The most comfortable that I’ve ever purchased . The pillows are amazing! And pillowcases 100% the best! You can’t go wrong with Mellow Sincerely Dawn Easterling Item type: White / King/Cali King  Sarah S.Verified 9/15/2026 Probably the most amazing purchase I've made this year so far!!! It's so lightweight and versatile. It's also very cooling on one side and comfy on the other. I've taken it with me to hotels, vacations, it will be a staple now when I pack! Item type: Gray / Full/Queen  Stephanie D.Verified 9/15/2026 I love love love this blanket. It is so comfortable i don't even need sheets but I ordered those to because I fell in love with this product!! Item type: Sand / Full/Queen  Lindsey S.Verified 9/15/2026 ⭐️⭐️⭐️⭐️⭐️ Item type: Midnight / King/Cali King  Andrea D. 9/13/2026 Just wow! Exceeded my expectations. This is my favorite thing so far from Mellow and now my favorite blanket is own! I am so glad i decided to order this. I have a few varieties of their pillows, the marshmellow comforter (amazing btw, but can get hot some nights) and now this cooling blanket. This cooling blanket is amazing I love how there is a bit of stuffing between the two fabrics to give it an airy cloud feel. Both sides are soft and feel amazing against the skin. My dog loves it so much t...  Kristen B.Verified 9/12/2026 It keeps me warm and cool!? Love the weight of it. Gives the feeling of a blanket without the full heat of a blanket. Would recommend for anyone who sleeps hot. Item type: White / King/Cali King  Brandy M.Verified 9/11/2026 My husband and I love it and the pillows an cases are amazing definitely recommend these to my family and friends Item type: Lavender / King/Cali King  Randall P.Verified 9/11/2026 This is very comfortable and soft, the cooling is magical for your body and your body will thank you, I find myself falling asleep faster and don't worry your body will warm your space but you won't know that because u'll be fast asleep and comfortable, I'm actually sleeping longer now, I feel like the cooling comforter is working with my body not against it, I sleep with the ac set at 68° and outside temperature is between 90°/ 105°, looking forward to using this winter because come morning I'm... Item type: Sage Green / King/Cali King  Stephanie T.Verified 9/8/2026 Love love love the blanket I wished the pillows were thicker but still love them. Item type: Midnight / King/Cali King Show more reviews Have A Question? See Our FAQs Will it actually keep me cool all night? It's built to. Instead of trapping your heat like a normal comforter, CloudCool Cooling Technology keeps air moving so heat and moisture escape through the night. Most hot sleepers tell us they stop waking up sweaty. What makes it different from other cooling comforters? How quickly will I notice a difference? It's lightweight. Will it still feel like a real comforter? What are the two sides? What is it made of? How many should I order? How do I wash it? Will it clump? Do I need a duvet cover? Can I use it year-round? When can I expect my order? What if I don't love it?  The Award-Winning Cooling Comforter Selling fast at the Summer Sale price. $50 OFF NOW 100,000+ Happy Sleepers  The comforter made for people who sleep hot. © Mellow LLC - Choosing a selection results in a full page refresh. - Opens in a new window. ## Express checkout Shopping Cart0 You’re **$100.00** away from **$0.99 Shipping** ## Your cart is empty How about these? [\\ \\ CloudAlign Pillow\\ \\ ★★★★★(34,672 reviews)\\ \\ $100.00$49.00Shop Now\\ \\ Shop Now](https://mellowsleep.com/products/cloud-alignment-pillow) [\\ \\ MarshMellow Comforter\\ \\ ★★★★★(10,876 reviews)\\ \\ $200.0099.99Shop Now\\ \\ Shop Now](https://mellowsleep.com/products/marshmellow-comforter) [\\ \\ Hotel Pillow\\ \\ ★★★★★(6,741 reviews)\\ \\ $59.99$29.99Shop Now\\ \\ Shop Now](https://mellowsleep.com/products/mellow-hotel-pillow) [\\ \\ Cooling Comforter\\ \\ ★★★★★(2,463 reviews)\\ \\ $129.00$79.99Shop Now\\ \\ Shop Now](https://mellowsleep.com/products/cloud-cold-comforter-white) ### Your cart is empty [Continue Shopping](https://mellowsleep.com/pages/shop) How About these? [](https://mellowsleep.com/products/marshmellow-comforter) [**MarshMellow Comforter**](https://mellowsleep.com/products/marshmellow-comforter) ★★★★★☆(14436 reviews) $200.00$84.99 White / Twin/TwinXLWhite / Full/QueenWhite / King/Cali KingAdd mellowsleep.com # mellowsleep.com is blocked This page has been blocked by an extension - Try disabling your extensions. ERR\_BLOCKED\_BY\_CLIENT Reload This page has been blocked by an extension  mellowsleep.com # mellowsleep.com is blocked This page has been blocked by an extension - Try disabling your extensions. ERR\_BLOCKED\_BY\_CLIENT Reload This page has been blocked by an extension  mellowsleep.com # mellowsleep.com is blocked This page has been blocked by an extension - Try disabling your extensions. ERR\_BLOCKED\_BY\_CLIENT Reload This page has been blocked by an extension  mellowsleep.com # mellowsleep.com is blocked This page has been blocked by an extension - Try disabling your extensions. 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