Is the ThermaCool actually cooling?

It uses cooling-treated memory foam and a breathable bamboo blend cover, and many hot sleepers report sleeping cooler than on plain foam. It is not a powered cooler, so very hot sleepers may still notice warmth.

Will it fit my mattress?

It comes in Twin XL, Full, Queen and Cal King. Elastic anchor bands stretch over the corners to hold it in place.

Is it good for side sleepers?

Yes. The 3-inch memory foam cushions shoulders and hips, which is why side and combination sleepers are its main audience.

Does the foam have certifications?

The memory foam is CertiPUR-US certified, meaning it meets limits on certain chemicals and emissions.

Will my sheets still fit?

The 3-inch height adds bulk, so deep-pocket sheets fit best. Some owners with standard sheets report a tight fit.

How does it compare with a gel memory foam topper?

Both use foam; this one relies on a breathable bamboo cover and cooling treatment rather than gel beads. It is thicker than many budget gel toppers, so it cushions more but softens more over time.

Where is the Dosaze ThermaCool Mattress Topper cheapest?

At Dosaze, for $399.99, as of our latest check.

What do buyers say about the Dosaze ThermaCool Mattress Topper?

Rated 4.9 out of 5 from 256 ratings.

Dosaze ThermaCool Mattress Topper

Best price now

$399.99at DosazeChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Dosaze

Dosaze ThermaCool Mattress Topper

Best price now

$399.99at DosazeChecked Nov 12

Prices are checked against each store and labelled with when.

Visit Dosaze

Ask our agent about this product

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Price facts

Last seen at $399.99 at Dosaze on Nov 12.

Our take on the Dosaze ThermaCool Mattress Topper

The Dosaze ThermaCool is a 3-inch memory foam mattress topper aimed at hot sleepers and side or combination sleepers. Its memory foam core is CertiPUR-US certified, and it sits under a breathable bamboo poly-blend cover held on by elastic anchor bands. Against gel-infused foam toppers from brands like Linenspa and Lucid, it leans on cooling claims and a thicker profile rather than a springy hybrid feel. Owners rate it highly, and most praise the softness and the secure fit; a few say it still sleeps warm and softens more than they expected.

Best forHot sleepers who want a cooler foam topperSide sleepers needing pressure reliefCombination sleepers who move at nightRenters softening a firm mattress without replacing it

Pros

3-inch memory foam adds real cushioning over a firm mattress
CertiPUR-US certified foam
Breathable bamboo poly-blend cover
Elastic anchor bands keep it from sliding
Cooling built into the foam and cover

Cons

Some owners still sleep warm on it
Softens noticeably under body weight over time
Memory foam can feel slow to spring back for some
Thick profile may make fitted sheets tight

Dosaze ThermaCool Mattress Topper prices at every store

DosazeNew
In stock
$399.99Checked Nov 12
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Dosaze ThermaCool Mattress Topper price history

Lowest price we've seen: $399.99 on Nov 12 at Dosaze. Tracked across 1 store since Nov 12.

What reviewers say

4.9 / 5256 ratings

Owners rate the ThermaCool very highly, mostly for comfort and for staying put on the mattress. Cooling is the split point: many hot sleepers say it helps, while others find it only slightly cooler than plain foam.

What people mention

CoolingMixedSome hot sleepers say it sleeps cooler than plain foam; others find the cooling effect modest.
ComfortPraisedOwners describe a soft, pressure-relieving feel that suits side sleepers.
Fit and stabilityPraisedThe elastic anchor bands keep the topper from sliding on the mattress.
DurabilityCriticisedA few owners say the foam softens and loses loft over months of use.
CoverPraisedThe bamboo poly-blend cover is described as breathable and well finished.
Sheet fitCriticisedThe 3-inch height makes some fitted sheets a tight stretch.

About the Dosaze ThermaCool Mattress Topper

The Dosaze ThermaCool Mattress Topper is a 3-inch memory foam topper made for hot sleepers. It has built-in cooling and a breathable design. The foam is CertiPUR-US certified.

The core is memory foam, and the cover is a bamboo poly-blend. Elastic anchor bands hold the topper in place on the mattress. It suits side sleepers and switch sleepers.

Type: Memory foam mattress topper
Thickness: 3 inches
Fill: Memory foam
Core: Foam
Cover: Bamboo poly-blend
Closure: Elastic anchor bands
Cooling: Built-in cooling, breathable
Certification: CertiPUR-US certified
Sleep position: Side sleepers, switch sleepers
Best for: Hot sleepers

Specifications

Size: Twin XL, Cal King, Full, Queen
Thickness: 3-inch
Type: Mattress Topper
Topper Type: Memory Foam
Certifications: CertiPUR-US certified
Fill Material: Memory foam
Fill Type: Memory foam

Questions and answers

Is the ThermaCool actually cooling?: It uses cooling-treated memory foam and a breathable bamboo blend cover, and many hot sleepers report sleeping cooler than on plain foam. It is not a powered cooler, so very hot sleepers may still notice warmth.
Will it fit my mattress?: It comes in Twin XL, Full, Queen and Cal King. Elastic anchor bands stretch over the corners to hold it in place.
Is it good for side sleepers?: Yes. The 3-inch memory foam cushions shoulders and hips, which is why side and combination sleepers are its main audience.
Does the foam have certifications?: The memory foam is CertiPUR-US certified, meaning it meets limits on certain chemicals and emissions.
Will my sheets still fit?: The 3-inch height adds bulk, so deep-pocket sheets fit best. Some owners with standard sheets report a tight fit.
How does it compare with a gel memory foam topper?: Both use foam; this one relies on a breathable bamboo cover and cooling treatment rather than gel beads. It is thicker than many budget gel toppers, so it cushions more but softens more over time.
Where is the Dosaze ThermaCool Mattress Topper cheapest?: At Dosaze, for $399.99, as of our latest check.
What do buyers say about the Dosaze ThermaCool Mattress Topper?: Rated 4.9 out of 5 from 256 ratings.