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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 GET $50 OFF Right NOW 02 HRS : 16 MIN : 57 SEC  # Ice Cool Comforter That Helps You Fall & Stay Asleep _(Especially During Summer)_ The CloudCool Comforter's dual-sided design lets you choose between silky Arctic Silk for maximum chill or plush CloudKnit for cozy-cool comfort. Combined with our advanced Naia™ air-channel fill, you finally have a comforter that actually stays cool all night long. _“Such a soft and cool yet warm blanket. I can’t explain, you just have to try it!”_ -Maria B. **CLAIM YOUR DISCOUNT** AS SEEN ON  CloudCool Comforter from Mellow Sleep on Vimeo  Playing in picture-in-picture Play   Cooling Tech Boosts Sleep Quality  Top Selling Comforter On TikTok  #1 Cooling Comforter of 2025  Rated 5 Stars By 99% of Customers ## You’ll Sleep Cooler On The Very First Night! ## The CloudCool Comforter combines the instant cool-to-touch sensation of Arctic Silk with the plush comfort of CloudKnit, filled with Naia™ air-channel fill that actively pulls body heat away as you sleep. Just pure, passive cooling built into every thread. Slide 1 of 4         **GET 38% OFF RIGHT NOW** ## YOU KNOW THIS FEELING ## Don't Choose Between Staying Cool & Being Comfortable Every night, it's the same cycle. You crawl into bed exhausted. You pull up the comforter. And within 20 minutes... your body starts overheating. The fill in regular comforters retains heat instead of cooling down. But the CloudCool Comforter breaks this cycle with the **Dual-Layer System.** **Arctic Silk pulls heat away** on contact. **The Naia™ fill has built-in air channels** continuously circulates that heat out of your microclimate. And **CloudKnit provides the plush, weighted comfort** that makes you feel held without trapping warmth. The result? Your body reaches the temperature it needs to stay in deep, restorative sleep. All. Night. Long. ## GET A FULL NIGHT’S REST AND… ## Wake Up Refreshed & Ready Every Day Most comforters, even the expensive ones, trap heat and humidity around your body, triggering night sweats and preventing the deep, restorative sleep your body craves. When you switch to the CloudCool™ Comforter, everything changes. Your body stays at the perfect temperature all night, moisture is actively wicked away, and you finally get the deep, healing sleep you've been missing. Enjoy perfect sleep, without night sweats and overheating, simply by switching your comforter to CloudCool™!   ## PATENTED TECHNOLOGY ## Your Perfect Temperature. The CloudCool™ Comforter always keeps you cool and comfortable. 1. **Arctic Silk Side -** For maximum instant chill. Perfect if you're a serious hot sleeper who wants that cool-to-the-touch sensation the moment you lay down. Silky smooth and incredibly cooling. 2. **Naia™ Air-Channel Fill -** Our sustainable Naia™ fill features hidden air channels that keep air moving and actively wick moisture away from your body, preventing that clammy, damp feeling that keeps you awake. 3. **CloudKnit Side -** For cozy-cool comfort. Perfect if you want the cooling benefits without the slick feel. Plush, soft, and still incredibly breathable. **Finally,** wake up without night sweats, without kicking off your covers, and without that 3am panic of waking up soaked. ## GET A FULL NIGHT’S REST ## Say Goodbye to Night Sweats & Say Hello to Energized Mornings! The CloudCool™ Comforter's dual-sided design and advanced Naia™ fill were engineered to help your body naturally maintain its ideal sleeping temperature throughout the night. This doesn't just feel good, proper temperature regulation tackles the root problems caused by poor sleep: Eliminates Night Sweats & Hot Flash Wake-Ups Reduces Overheating & Humidity Buildup Helps You Stay Asleep Through the Night Boosts Daytime Energy & Mental Focus Prevents That Clammy, Damp Feeling Stops the Constant Cover-Kicking For Good   ## LUXURY YOU CAN TRUST ## Premium naia® Fill Keeps You Cool, Cozy & Safe Nothing ruins a good night's sleep like a hot, sweaty comforter made from materials that trap humidity and feel clammy against your skin. That's why the CloudCool™ Comforter uses premium Arctic Silk and CloudKnit shells that actively disperse heat and moisture, keeping you cool and dry all night long. Plus, the CloudCool™ Comforter is OEKO-TEX® certified, hypoallergenic, antibacterial, and vegan. It's 100% safe for long-term skin contact and perfect for sensitive skin, too! Made with luxuriously soft, breathable fabric that protects your skin, hair, and health. And it's machine-washable for easy care. Dual Sided Design Arctic Silk Shell Naia™ Air-Channel Fill OEKO-TEX® Certified Lifetime Warranty Cloud Cooling Comforter Others      ## One Comforter. Three Ways to Sleep Cool.  **"I Wake Up Drenched Most Nights."** Flip to the Arctic Silk side. The silky surface feels cool the moment your skin touches it, and the Naia fill keeps air circulating all night. You'll go from waking up soaked to waking up refreshed.  **"I Run Warm but Hate That Slick, Cold Feeling."** The CloudKnit side gives you all the cooling benefits without the slippery sensation. Incredibly soft and inviting... like sleeping wrapped in a cloud that somehow stays cool.  **"Night Sweats Are Ruining My Sleep."** The dual-sided cooling and moisture-wicking Naia fill was specifically designed for night sweats and hot flashes. You're not managing symptoms. You're finally sleeping through them. ## 99% Of Customers Give The CloudCool Comforter 5 Stars! Slide 1 of 3 "Ahh, you need to just try it. Trust me. You'll understand the hype."  Sophie R Verified Customer We're obsessed with this comforter. Literally it's everything!"  Anna S Verified Customer "My kids and obviously our cat! ar obsessed with this comforter."  Meghan & Colin Verified Customer "Ahh, you need to just try it. Trust me. You'll understand the hype."  Sophie R Verified Customer We're obsessed with this comforter. Literally it's everything!"  Anna S Verified Customer "My kids and obviously our cat! ar obsessed with this comforter."  Meghan & Colin Verified Customer "Ahh, you need to just try it. Trust me. You'll understand the hype."  Sophie R Verified Customer **Start Waking Up Rested and Energized**  ## LUXURY YOU CAN TRUST ## Premium Materials That Keep You Cool, Comfy & Safe! ## **PREMIUM MATERIALS**  Fresh & Cool All Night  Baby-Safe Fabric  Machine Washable  Hypo Allergenic & Antimicrobial  ## Designed For Hot Sleepers, Perfected By Sleep Science ## Unlike most mass-produced comforters, the CloudCool™ Comforter was made with input from sleep scientists and thermal comfort experts who have spent their careers studying how temperature affects sleep quality. ## While other comforter companies just give you a surface to sleep on, the CloudCool™ Comforter gives you advanced cooling technology that actively maintains your ideal sleep temperature throughout the night. ## Now anyone can enjoy a better night's sleep, and wake up free from night sweats, overheating, and feeling energized, simply by switching their comforter to CloudCool™! ## **Your Satisfaction is Our Priority** ## Try Mellow Hotel Pillow risk-free and if you don’t love it, we’ll fix it.  30-NIGHT BETTER SLEEP GUARANTEE Try CloudCool™ Cooling Comforter yourself for up to 30 nights, and if you aren’t 100% satisfied, simply return it!  1-YEAR WARRANTY Each CloudCool™ Cooling Comforter pillow is proudly backed by a 1-year warranty.  FREE, FAST SHIPPING IN THE USA We also provide fast international shipping. Free shipping on qualifying offers only.  QUALITY PROMISE We control every step of the process to ensure a safe and high-quality product.  WORLD CLASS CUSTOMER SUPPORT We’re real humans, we’re quick, and we actually like talking to you!  MISSION-DRIVEN Our mission is to help millions of people enjoy the benefits of science-driven sleep support. Slide 1 of 24                           "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 Select Color: Twin/Twin XL Select Size: Size Guide Twin/Twin XL Full/Queen King/Cali King 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.  Voted #1 Cooling Comforter  Dual Layer - Arctic Silk Side + CloudKnit Side  OEKO-TEX® Certified & Naia™ Sustainable Filling  Hypoallergenic, Antibacterial & 100% Vegan  Fully Machine Washable  Ships in 24 hours Buy Now - Ships Today 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 com