Sleep Cool All Night & Wake Up Actually Rested
If you kick off the covers at 2am, flip your pillow to the cold side, or wake up sweaty and exhausted — your comforter is the problem. The Dosaze ThermaCool Comforter actively absorbs excess body heat with NASA-inspired cooling gel and wicks moisture away all night, so you finally stay cool, dry, and deeply asleep.
"I've tried every 'cooling' comforter out there, and this is the first one that actually stays cool all night. It feels cold when you first get in bed — almost like hotel sheets." - Hannah L.
ORDER THERMACOOL COMFORTER NOW
You'll Feel The Difference On Night One
ThermaCool is the only comforter that combines an instantly cool-to-the-touch cover with a 30% phase-change cooling gel fill — engineered to eliminate the overheating, night sweats, and 3am wake-ups that ordinary comforters cause.
Recommended By Sleep Medicine Specialists
"Your core body temperature needs to drop 1–2°F for your brain to enter deep, restorative sleep — and stay there. When heat gets trapped under your comforter, your body fights to cool itself all night, fragmenting your sleep with micro-awakenings you don't even remember. A comforter that actively pulls heat away, like a phase-change material design, addresses the root cause instead of just feeling cool for the first five minutes."
- Dr. Elaine M.
Board-Certified Sleep Medicine Specialist
YOU'LL NEVER GO BACK!
Where Real Cooling Science Meets Cloud-Soft Comfort
Most "cooling" comforters only use a slick surface fabric that feels cool for a few minutes — then traps your body heat all night like any other comforter. The problem was never the thermostat. It's what you sleep under.
We didn't try to improve a traditional comforter. We started with how your body regulates temperature and built a comforter around it. A 30% phase-change material (PCM) micro-gel fill — inspired by NASA's original temperature-regulating research — actively absorbs excess heat as you warm up and releases it as you cool down. Premium TENCEL™ Lyocell fibers wick moisture off your skin at the same time.
If you aren't falling asleep faster and staying asleep cooler, it's time to try ThermaCool.
Cool, Dry & Deeply Asleep
Stop Waking Up At 3AM Sweating — Start Sleeping Through The Night
Your old comforter — even the expensive "breathable" one — traps a layer of hot, humid air around your body and holds it there for 8 hours straight. The result is tossing, cover-kicking, sweat-soaked sheets, and that "I barely slept" feeling.
When you switch to ThermaCool, everything changes on night one.
The cool-touch side feels like the cold side of the pillow — instantly. The PCM gel fill absorbs excess heat the moment your body warms up. And TENCEL fibers pull moisture off your skin before it can wake you.
Get rid of the overheating and night sweats — simply by changing your comforter to ThermaCool.
Dual-Sided Design
Two Sides. One Perfect Sleep Temperature — All Year Round.
ThermaCool always feels just right, no matter the season — because you choose the side that matches the night.
The secret is in the dual-sided design:
The Cool-Touch Side
A polyamide performance blend that feels instantly cold against your skin — like slipping into hotel sheets — for the hot summer nights when you need cooling the moment you get in bed.
The Cozy TENCEL™ Side
Luxurious TENCEL™ Lyocell that's breathable, silky-soft, and naturally moisture-wicking — perfect for cooler nights and year-round comfort.
The PCM Cooling Core
No matter which side you choose, the 30% phase-change micro-gel fill works all night — absorbing excess heat as you warm up and releasing it as you cool down.
Cooler Nights, Deeper Sleep, More Energy
ThermaCool Helps Your Body Hold The Ideal Sleep Temperature Naturally
ThermaCool's adaptive design was created with sleep researchers to help your body stay in its ideal temperature range all night long.
This isn't just about comfort — stable temperature is one of the biggest drivers of deep sleep. Here's what changes when you stop overheating:
- Fall Asleep Faster — Cool From The First Minute
- Fewer 3AM Wake-Ups From Overheating
- Reduces Night Sweats & Clammy Sheets
- No More Kicking The Covers On & Off
- Sleep Cooler Next To A Partner Who Runs Hot
Moisture-Wicking TENCEL™ Fibers
Wicks Away 68% More Moisture Than Polyester
Sweat is what turns a warm night into a miserable one. ThermaCool is filled with ultra-high-quality TENCEL™ fibers that absorb 68% more moisture than polyester, wicking it off your skin all night long.
When tested in extreme humidity conditions, TENCEL outperformed polyester, cotton, and wool fills — creating the driest sleeping surface of any material tested.
It's also naturally hypoallergenic, keeping your sleep environment fresh, dry, and comfortable night after night.
How ThermaCool Compares
| ThermaCool | Others | |
|---|---|---|
| Instantly Cool To The Touch | ✓ | ✗ |
| 30% Phase-Change Cooling Gel Fill | ✓ | ✗ |
| Moisture-Wicking TENCEL™ Fibers | ✓ | ✗ |
| Dual-Sided, All-Season Design | ✓ | ✗ |
| Works With Or Without A Duvet Cover | ✓ | ✗ |
| FREE ThermaCool Sheet Set Included | ✓ | ✗ |
| 60-Night Sleep Trial | ✓ | ✗ |
Made For Every Kind Of Hot Sleeper
Night Sweats
Whether it's hormones, medication, or just running hot — TENCEL fibers wick moisture off your skin before it soaks your sheets, and the PCM gel absorbs the heat spikes that trigger sweating in the first place.
Partners Who Run Hot
One of you is always too hot, the other too cold. ThermaCool's adaptive cooling regulates each sleeper's side independently — absorbing heat where it builds and leaving the rest of the bed comfortable. The thermostat war is over.
Hot Summer Nights
Sleep through heat waves without blasting the AC all night. The cool-touch side feels cold the moment you get in bed, and the cooling core keeps working for hours — your energy bill will thank you.
Hot Sleepers Give ThermaCool 5 Stars!
PREMIUM MATERIALS
Sleep Like You're In A Luxury Hotel - Every Night!
Lightweight and airy with a cloud-like loft, ThermaCool looks as good as it feels. We think it looks great on its own — but if you prefer a duvet cover, we included eight loops around the border so it stays perfectly in place.
Engineered For Sleep Climate — Not Just Softness
Unlike mass-produced comforters, ThermaCool was designed from scratch by a team that studied how body temperature rises and falls through the night — and why ordinary bedding traps heat exactly when your body needs to release it.
The answer wasn't a slicker fabric. It was phase-change material — cooling technology inspired by NASA's original temperature-regulating research — blended into 30% of the fill itself, paired with TENCEL™ fibers that move moisture away from your skin.
While other comforter companies just give you something to sleep under, ThermaCool actively manages your sleep climate all night long — so your body can do what it's designed to do: fall into deep, restorative sleep and stay there.
Your Satisfaction is Our Priority
Try ThermaCool risk-free. If you don't love it, we'll make it right.
60-NIGHT SLEEP GUARANTEE
Sleep under your ThermaCool for up to 60 nights. If you aren't 100% in love with it, return it for a full refund — no questions asked.
3-YEAR WARRANTY
Each ThermaCool comforter is built to last, and backed by a 3-year warranty. If anything goes wrong, we'll replace it.
FREE, FAST SHIPPING IN THE USA
Free shipping and returns on all orders.
FREE THERMACOOL SHEET SET
For a limited time, every ThermaCool Comforter comes with a FREE ThermaCool Sheet Set — up to a $169.99 value — automatically added to your order.
WORLD CLASS CUSTOMER SUPPORT
Real humans. Fast responses. We're here to help — and our customers rave about the service.
MISSION-DRIVEN
Our mission is to help millions of people experience the life-changing benefits of deep, uninterrupted sleep. This isn't just a comforter — it's the end of hot, restless nights.
Dosaze™ ThermaCool Comforter
The Comforter That Ends Hot, Restless Nights. Engineered with NASA-inspired phase-change cooling gel and moisture-wicking TENCEL™ fibers to keep you cool, dry, and cloud-comfortable all night long — no matter how hot you sleep.
Color — Soft Grey
Select Size:
Going fast: the FREE Sheet Set offer ends soon
60-night trial | Hassle-free returns
Want it fast? Order now for FREE delivery.
Dual-sided design: one side made from a cool-to-the-touch polyamide performance blend, the other from luxurious TENCEL™ Lyocell. Filled with 30% phase-change micro-gel that actively regulates temperature, plus premium moisture-wicking, hypoallergenic fibers.
For a limited time, every ThermaCool Comforter includes a FREE Dosaze ThermaCool™ Sheet Set (up to a $169.99 value) — softer than silk, naturally hypoallergenic, and made with the same cooling technology. It's added to your order automatically at checkout.
Free shipping on all orders in the USA. Covered by our 60-night sleep trial — if you're not completely in love with your ThermaCool, contact us at support@dosaze.com for a full refund. Backed by a 3-year warranty.
