• "I run so hot I've slept without blankets for years, even in winter, which made my husband cold. Since switching to this topper my night sweats have dropped a lot feels cool to the touch even hours in."

    Jaylen F., Austin, TX - Verified Buyer

  • "100+ degree summers here. Doesn't feel clammy or trap heat like my old memory foam. Not magic on the hottest nights, but a real difference most nights."

    Samantha K., Las Vegas, NV - Verified Buyer

  • "Menopause hot flashes were brutal at night. Hasn't eliminated them but noticeably cut how often I wake up overheated. Solid improvement for a topper."

    Diane R., Columbus, OH - Verified Buyer

  • "Hot sleeper, used to wake up drenched most nights. First week with this topper I made it through without flipping to the 'cool side.' Doesn't trap heat like my old mattress."

    Tyler B., Kansas City, MO - Verified Buyer

  • "I was skeptical, but this topper really works! Cooling and supportive my back pain has significantly reduced. Plus, no more shifting or adjusting in the middle of the night."

    Jessica R.

$180 valueEarly Fall Sale: Free ThermaCool Sheet Set
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
Dosaze ThermaCool Mattress Topper
12+ Hour Cooling
6.9℉ Cooler Lab-tested
Reduced Night Sweats

Dosaze ThermaCool Mattress Topper

12+ Hour Cooling6.9℉ Cooler Lab-testedReduced Night Sweats
★★★★★

"I run so hot I've slept without blankets for years, even in winter, which made my husband cold. Since switching to this topper my night sweats have dropped a lot feels cool to the touch even hours in."

— Jaylen F., Austin, TX - Verified Buyer
★★★★★

"100+ degree summers here. Doesn't feel clammy or trap heat like my old memory foam. Not magic on the hottest nights, but a real difference most nights."

— Samantha K., Las Vegas, NV - Verified Buyer
★★★★★

"Menopause hot flashes were brutal at night. Hasn't eliminated them but noticeably cut how often I wake up overheated. Solid improvement for a topper."

— Diane R., Columbus, OH - Verified Buyer
★★★★★

"Hot sleeper, used to wake up drenched most nights. First week with this topper I made it through without flipping to the 'cool side.' Doesn't trap heat like my old mattress."

— Tyler B., Kansas City, MO - Verified Buyer
Save 32%
/
Mattress Topper Size
Free Shipping 60-Night Sleep Trial Free ThermaCool Sheet Set CertiPUR-US® Certified Foam Free Shipping 60-Night Sleep Trial Free ThermaCool Sheet Set CertiPUR-US® Certified Foam
Free shipping. Free & easy returns. 60 Night Trial
Free Shipping 60-Night Sleep Trial Free ThermaCool Sheet Set CertiPUR-US® Certified Foam
Free Shipping 60-Night Sleep Trial Free ThermaCool Sheet Set CertiPUR-US® Certified Foam

Designed for Cooling Comfort. Built for Real Sleep. Sleeping hot isn’t just uncomfortable—it’s disruptive. Tossing, sweating, and flipping your pillow all night makes it hard to get the rest your body needs. That’s why we created the ThermaCool Mattress Topper engineered with advanced cooling technology to help regulate temperature and wick away heat all night long.

🧊 Active Cooling with ThermaCool Technology - real, science-backed thermoregulation

💤 No more overheating at 3 a.m. - just deep, restorative sleep

🛏️ Drastically extends your mattress lifespan

🔒 Non-toxic, CertiPUR-US® certified foams for safe, healthier sleep

 

Say goodbye to back pain and hello to a well-rested you.

We spend a third of our life sleeping. 2,891 hours every single year!

Quality sleep is one of the MOST important factors in overall health. Did you know that poor sleep triggers:

  • Insulin resistance
  • Cognitive decline
  • Mental health issues...
  • And has even been linked to cardiovascular disease?

Your comfort is one of the most important parts of sleep, and your sleep surface plays a HUGE role in keeping you supported and comfy. At Dosaze, we knew that we wanted to do something different than the played-out, flimsy, unsupportive toppers that people were peddling all over.

So, we set out to develop the perfect side sleeper mattress topper. One that provides the perfect balance of support and comfort.

We personally evaluated hundreds of manufacturers in the market so we could bring you the best quality product at the best price. And we don't just "markup" items arbitrarily because we can. We care about improving your sleep, at a fair price.

Dosaze exists solely to craft your perfect night’s sleep. After two years of development, we've perfected every detail – from the density of the foam to the design and durability.

Even more, we are so confident you’ll love it, we give you 60 nights to try it, totally risk-free.

We hope that your sleep is radically changed, just like ours was.

  • 6.94°F of Targeted Thermal Control
  • 12+ Hours of Cooling
  • Risk-free: 60-night trial, free shipping and a 3-year warranty
  • Stays put and is easy to trust. Elastic corner straps stop it sliding, and the foam is CertiPUR-US® certified.

Designed for Cooling Comfort. Built for Real Sleep. Sleeping hot isn’t just uncomfortable—it’s disruptive. Tossing, sweating, and flipping your pillow all night makes it hard to get the rest your body needs. That’s why we created the ThermaCool Mattress Topper engineered with advanced cooling technology to help regulate temperature and wick away heat all night long.

🧊 Active Cooling with ThermaCool Technology - real, science-backed thermoregulation

💤 No more overheating at 3 a.m. - just deep, restorative sleep

🛏️ Drastically extends your mattress lifespan

🔒 Non-toxic, CertiPUR-US® certified foams for safe, healthier sleep

 

Say goodbye to back pain and hello to a well-rested you.

ThermaCool Fiber: 65% Proprietary Cool-Poly blend with 35% bamboo viscose

We guarantee you with a risk-free purchase, you can return you order within 60 days from delivery if you're not satisfied with the quality. Our 60-day sleep trial is applicable to all variety of our mattress toppers.

If you're not in love with your purchase during this time period, you have the option to return It to us for a full refund. Simply reach out to support@dosaze.com to initiate a return.

Measurements & Dimensions

Twin: 37 x 74 x 3

Twin XL: 37 x 79 x 3

Full: 54 x 75 x 3

Queen: 59 x 79 x 3

King: 75 x 79 x 3

Cal King: 71 x 83 x 3

The Science of ThermaCool Mattress Toppers

The 3-Layer Cooling Architecture

Independent testing proved the ThermaCool™ Mattress Topper can lower surface temperature by up to 6.94°F for 12+ hours, even under continuous body heat.

The Cool-To-Touch Cover

Made with advanced Phase Change Material actively pulls heat away from your skin, delivering an instant cool-to-the-touch feel all night.

The ThermaCool™ Bands

Lab-tested to keep you cooler for 12+ hours. Strategically positioned to target your body’s core where heat is most condensed.

Dosaze Has Been Loved By

What Can Dosaze Do For You?

Your mattress is trapping heat. Science says it doesn't have to.

Your mattress is trapping heat. Science says it doesn't have to.

The Thermacool Mattress Topper uses phase-change material technology to actively absorb and release body heat — keeping your sleep surface at an optimal temperature all night. No more flipping to the cool side. No more waking up drenched. Just regulated, uninterrupted sleep.

Hot flashes don't have to follow you into bed.

Night sweats affect up to 80% of women during menopause — and poor sleep makes everything harder. The Thermacool Topper's temperature-regulating surface responds to your body's heat fluctuations in real time, helping reduce the sleep disruption caused by hormonal temperature swings. Rest that actually restores.

Two different sleep temperatures. One bed. Finally solved.

If your partner sleeps hot and you don't, you know the nightly negotiation over blankets and AC. The Thermacool Topper provides a thermally balanced sleep surface — so both of you stay in your comfort zone without compromise. Better sleep. Less friction.

Heat and pressure are two of the biggest triggers for back pain at night.

The Thermacool Mattress Topper adds a layer of pressure-relieving cushioning while actively managing surface temperature — because heat build-up causes muscle tension, and tension disrupts restorative sleep. The result: a sleep surface that works with your body, not against it.

What Can Dosaze Do For You?

Your mattress is trapping heat. Science says it doesn't have to.

Your mattress is trapping heat. Science says it doesn't have to.

The Thermacool Mattress Topper uses phase-change material technology to actively absorb and release body heat — keeping your sleep surface at an optimal temperature all night. No more flipping to the cool side. No more waking up drenched. Just regulated, uninterrupted sleep.

Hot flashes don't have to follow you into bed.

Night sweats affect up to 80% of women during menopause — and poor sleep makes everything harder. The Thermacool Topper's temperature-regulating surface responds to your body's heat fluctuations in real time, helping reduce the sleep disruption caused by hormonal temperature swings. Rest that actually restores.

Two different sleep temperatures. One bed. Finally solved.

If your partner sleeps hot and you don't, you know the nightly negotiation over blankets and AC. The Thermacool Topper provides a thermally balanced sleep surface — so both of you stay in your comfort zone without compromise. Better sleep. Less friction.

Heat and pressure are two of the biggest triggers for back pain at night.

The Thermacool Mattress Topper adds a layer of pressure-relieving cushioning while actively managing surface temperature — because heat build-up causes muscle tension, and tension disrupts restorative sleep. The result: a sleep surface that works with your body, not against it.

Why Pick The ThermaCool Mattress Topper

Zero Risk, All Reward

Everyone deserves a good night’s sleep. Skip the stress and try our ThermaCool Mattress Topper risk-free for 60 nights. If our Mattress Topper doesn’t improve reduce your night sweats, send it back with no questions asked.

Still Not Sure?

Our Happy Customers

FAQs

Policies

Yes. If you aren’t 100% satisfied with our mattress topper, you can exchange or return it for a full refund. No return shipping fees. No processing fees. Just email us at support@dosaze.com and we’ll take care of you.

We offer free shipping to all 50 US states. We can also ship to APO addresses, though shipping fees may apply.

We’ll be honest - the Dosaze ThermaCool Mattress Topper isn’t the cheapest option. But if you’ve ever struggled with overheating, night sweats, or tossing and turning just to find the “cool side” of the bed, you already know how valuable real cooling comfort is. Hot sleepers lose more than just sleep—they wake up groggy, dehydrated, and restless. Over time, those restless nights affect everything: your mood, energy, and focus. ThermaCool’s proprietary heat-dissipating technology is designed to pull excess warmth away from your body and maintain a consistent, breathable sleep surfaceso you stay cool, dry, and deeply asleep all night long. You spend one-third of your life in bed. Why settle for waking up sticky and exhausted? ThermaCool is built to last, with high-quality materials and multi-layered construction that keeps performing night after night even in the hottest months. If cool, uninterrupted sleep matters to you, the ThermaCool Mattress Topper is worth every degree.

Waking up drenched in sweat or tossing all night trying to find the “cool side” of the bed? You’re not alone. Overheating during sleep is one of the most common (and most overlooked) reasons people wake up feeling exhausted instead of refreshed.


Here’s the truth: you’ll spend over 230,000 hours sleeping in your lifetime. And if you’re overheating for even half of those, that’s a serious hit to your comfort, recovery, and overall health.


So let’s be real. You could grab a cheap memory foam topper right now and call it a night. But if it traps heat and turns your bed into a sauna by 2 a.m., what’s the point?


We built the Dosaze ThermaCool Mattress Topper for people who are tired of sleeping hot. Literally.

Packages occasionally get lost in the mail or get stolen on your doorstep. We hate it when it happens to us too.

Not to worry. If your package is lost or stolen, please email us at support@dosaze.com, and we will do our best to make the situation right. We evaluate every case individually, and we usually send a replacement at no cost if your order is lost or stolen.

If you want, you can also purchase package protection through Navidium during the checkout process.

Navidium is an optional package insurance that protects your order if it is lost or stolen after delivery. If this does happen, you'll be able to file a claim to either get your money back or get an additional pillow free of charge. You can see the full terms here.

Technology

The DreamAlign Mattress Topper uses a 3-zone support design that distributes weight more evenly across your body. Each zone provides a different level of support, helping heavier areas stay supported while lighter areas remain comfortable.

A high-density support core prevents excessive sinking, while the bamboo poly-blend cover helps regulate temperature and manage moisture for more consistent comfort. Together, the layers work to improve overall sleep support without changing the firmness of your mattress.

Yes, it is. You can see more details on our certification here. It is also OEKO-TEX Standard 100 certified, so you can rest assured that you're sleeping on safe, high-quality materials.

Product

Twin: 37 x 74 x 3 inches

Twin XL: 37 x 79 x 3 inches

Full: 54 x 75 x 3 inches

Queen: 59 x 79 x 3 inches

King: 75 x 79 x 3 inches

Cal King: 71 x 83 x 3 inches

We recommend washing the cover in cold water on a gentle cycle, then air drying or tumble drying on low. Avoid using bleach or harsh chemicals to preserve the cooling properties.

Absolutely. The ThermaCool™ Mattress Topper comes with a 3-year warranty covering manufacturing defects and abnormal wear. You also get a60-night sleep trial and free shipping in the U.S. so it’s 100% risk-free to try.

Shop Now