The cooling comforter that cools three ways.

Feels cool the second you touch it, stays cool as you sleep, and pulls moisture off your skin. Plus a free cooling sheet set.

4.9 from 63 reviews
INCLUDEDFree cooling sheet set ($159.99 value)
Shop ThermaCoolSee the 5 reasons
  • Free shipping
  • 60-night sleep trial
  • Free returns
  • 3-year warranty
Dosaze ThermaCool dual-sided comforter, labeled: feels cool on contact, stays cool with PCM fill, wicks moisture with TENCEL lyocell

5 reasons ThermaCool keeps you cooler

Cooling comforters don't all cool the same way. Some feel cool for a minute, some breathe better. Here's what to check before you buy any of them, and how ThermaCool measures up.

Cool-to-touch Q-max tested side by side in the same lab: Dosaze ThermaCool and Rest Evercool both measured about 0.43

It feels cool the second you touch it.

ThermaCool's cooling fabric pulls heat away from your skin on contact. That's measured as Q-max: the higher the number, the cooler a fabric feels. In side-by-side lab testing on the same day, ThermaCool's Q-max is on par with Rest Evercool's: both measured about 0.43.

Check any comforter: is there a lab-tested Q-max, or just the words "cool to the touch"?
"The comforter is cool to the touch and yet still plush and luxurious feeling to it. Have washed it multiple times and still feels like new"
Nicholas F., verified buyer
Illustration of phase change material: as you warm up, microcapsules in the fill melt and absorb heat, then release it and re-solidify as you cool

It stays cool as you sleep.

Cool-touch fabric feels great when you get in, then warms up to your body. ThermaCool's fill is made with 30% phase change material (PCM), which absorbs excess heat as you warm up and releases it as you cool down, so the cooling keeps working after that first touch.

Check any comforter: ask what keeps a comforter cool at 3 a.m., not just when you first get in.
"Stays cool throughout the night, paired with the pillow sheets I have never slept better."
MP, verified buyer
Water vapor absorbed in very humid air, fiber-level data from Lenzing: TENCEL lyocell about 20.5 percent, wool about 15, cotton about 8, polyester about 0.5

It pulls moisture off your skin.

The sleep side is a 75% TENCEL™ lyocell knit. Lyocell is a fiber that absorbs water vapor into its core instead of letting it sit on the surface. In Lenzing's fiber testing, lyocell absorbed more water vapor than wool, cotton or polyester.

Check any comforter: check what touches your skin. Polyester fibers don't absorb moisture.
"My husband no longer sweats under this comforter. Love it!"
Brittany, verified buyer

Moisture data: Lenzing AG, fiber-level testing, not a finished-product measurement.

ThermaCool comforter plus a free ThermaCool cooling sheet set, a $159.99 value

A cooling sheet set comes free.

Every ThermaCool comforter comes with a free ThermaCool cooling sheet set (fitted sheet, flat sheet and two pillowcases), a $159.99 value. None of the comforters we compared come with sheets.

Check any comforter: compare what's in the box, not just the price tag.
Dosaze versus Rest Evercool, highlighted: free returns versus a 10 dollar refund fee. Also 60-night sleep trial versus 30 nights, 3-year warranty versus 1 year

60 nights to decide. Free returns.

Sleep on it for 60 nights. If it's not for you, returns are free. And ThermaCool is covered by a 3-year warranty. Rest Evercool, by comparison, gives you 30 nights, charges a $10 refund fee if you send it back, and covers it for 1 year.

Check any comforter: read the return policy for refund fees and how many nights you really get.

Rest Evercool terms as listed on rest.com as of 10/26/2026: $10 flat fee per order on refunds; exchanges and store credit are free.

How the cooling comforters compare

Dosaze ThermaCoolRest EvercoolSlumber Cloud UltraCoolBuffy BreezeCozy Earth
Queen price$200 + free sheet set$229 ($171 on sale)$299$250 ($200 first order)$388
Cool-to-touch fabricYesYesYesYesNot listed
Phase change material (PCM)YesNot listedYesNot listedNot listed
TENCEL™ fabric on the sleep sideYesFill onlyNot listedYesNot listed
Free sheet setYesNoNoNoNo
Sleep trial60 nights, free returns30 nights, $10 refund fee30 nights50 nights100 nights
Warranty3 years1 year180 daysNot listed10 years*
Dosaze ThermaCoolRest EvercoolSlumber Cloud UltraCoolBuffy BreezeCozy Earth
Queen price $200 + free sheet set$229 ($171 on sale)$299$250 ($200 first order)$388
Cool-to-touch fabric YesYesYesYesNot listed
Phase change material (PCM) YesNot listedYesNot listedNot listed
TENCEL™ fabric on the sleep side YesFill onlyNot listedYesNot listed
Free sheet set YesNoNoNoNo
Sleep trial 60 nights, free returns30 nights, $10 refund fee30 nights50 nights100 nights
Warranty 3 years1 year180 daysNot listed10 years*
  • Dosaze ThermaCool
  • Rest Evercool
  • Slumber Cloud UltraCool
  • Buffy Breeze
  • Cozy Earth

Queen comforter prices and terms as listed on each brand's website as of 10/26/2026. *Cozy Earth requires its duvet cover to validate the warranty.

Feels cool. Stays cool. Stays dry.

Free cooling sheet set included. 60-night sleep trial.

Shop ThermaCool

What hot sleepers say

4.9 from 63 reviews
"My husband is a hot sleeper and I run cold. This blanker solved a huge problem for us! The blanket is cozy and actually cooling like it says it is."
Tali, verified buyer
"This comforter is everything they claim it is, cool, light as a feather, soft, beautiful, and like sleeping without one on."
Kim M., verified buyer

Try it for 60 nights.

Free cooling sheet set included. Free shipping, free returns.

Shop ThermaCool

TENCEL™ is a trademark of Lenzing AG.

Q-max (W/cm²): V-Trust test, 9/17/2025, run the same day on a retail-purchased Rest Evercool. Both measured about 0.43.

Moisture data: Lenzing AG, fiber-level testing, not a finished-product measurement.

Free ThermaCool sheet set (fitted sheet, flat sheet and two pillowcases) regularly sold at $159.99.

Competitor information as listed on each brand's website as of 10/26/2026.