What is the coolest mattress topper material?

Latex and wool. Latex has an open-cell structure with pin-core ventilation that moves air with every position change; wool regulates temperature by moving moisture away from the skin. Both outperform every foam we have looked at, including gel-infused and copper-infused versions.

Do gel-infused memory foam toppers actually sleep cool?

They sleep cooler than plain memory foam, which is a lower bar than it sounds. Gel beads and phase-change covers absorb heat quickly at first, then saturate. If you run genuinely hot, a gel foam topper will feel better for the first hour and much the same by the middle of the night.

Will a cooling topper fix a mattress that sleeps hot?

Partly. The topper controls the surface you actually touch, so a breathable one makes a real difference. But it cannot vent a dense foam mattress underneath it, and a thick topper of any material traps more heat than a thin one. Two inches of latex will beat four inches of anything.

Does a thicker topper sleep hotter?

Yes, for the same material. More material means more insulation between you and the air, and more of your body sinking into an enclosed pocket. If heat is your main complaint, take the thinnest topper that still fixes the comfort problem you are trying to solve.

Should I use a cooling mattress protector too?

Only a breathable one. A waterproof protector is a plastic membrane, and it undoes much of what a breathable topper achieves. If you need waterproofing, choose a protector that states it is air-permeable and put it over the topper, not under it.

Mattress toppers · Updated October 2026

Best Cooling Mattress Toppers

No topper actively cools you. The good ones simply stop trapping the heat your body produces, and the material does almost all of that work. We ranked every topper in our database on how well its construction sheds heat, then held the price in check so a genuinely usable pick sits at the top.

Best overall cooling topper

Birch Organic Wool Topper

$449

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Best value

Sleep On Latex Pure Green Topper

$199

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Best natural materials

Avocado Alpaca Wool Mattress Topper

$934

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Longest expected life

Avocado Eco Organic Topper (Medium)

$449

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Best for hot sleepers

Avocado Eco Organic Topper (Plush)

$549

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Topper scores on this page are editorial evaluations based on construction, published specifications, materials and owner feedback. Toppers do not go through the physical mattress lab protocol we use for mattresses, so nothing here is presented as a measurement.

What had to be true to qualify

A cooling evaluation of at least 8.5/10, based on material structure, breathability and owner reports of overheating.
No hard gate on material, but dense unventilated memory foam cannot reach the bar on its own — the ones that pass do so through latex pin-coring, wool fibre or perforated construction.
Still in production and buyable in standard US sizes.

Ranked by cooling evaluation (60%) and overall quality (40%), with a price adjustment so an outlier-priced topper does not become the default answer.

The qualifying toppers compared

Topper	Material	Thickness	Firmness	Pressure relief	Support	Cooling	Durability	Trial	Warranty	Price	Evidence
Birch Organic Wool Topper	GOTS Certified Organic Wool + Organic Cotton Shell	1.5 inches	Plush (3/10)	9.4/10	8.8/10	9.3/10	9.2/10	100 nights	10 years	$449	Editorial evaluation
Avocado Alpaca Wool Mattress Topper	100% Alpaca Wool Fill + Organic Cotton Shell	3 inches	Plush (3/10)	9.6/10	8.9/10	9.5/10	9.3/10	100 nights	1 year	$934	Editorial evaluation
Avocado Eco Organic Topper (Medium)	GOLS Certified Organic Dunlop Latex	2 inches	Medium (6/10)	9.1/10	9.4/10	9/10	9.3/10	100 nights	1 year	$449	Editorial evaluation
Avocado Eco Organic Topper (Plush)	Talalay Latex	2 inches	Plush (4/10)	9.4/10	8.8/10	9.1/10	9.1/10	100 nights	1 year	$549	Editorial evaluation
Sleep On Latex Pure Green Topper	100% Natural Dunlop Latex	2 inches (also 3 inches)	Soft / Medium / Firm	8.5/10	9/10	9.2/10	9.5/10	100 nights	5 years	$199	Editorial evaluation
Avocado Down Mattress Topper	Responsibly Sourced Down + Organic Cotton Shell	3 inches	Plush (3/10)	9.4/10	8.3/10	8.9/10	8.7/10	100 nights	1 year	$499	Editorial evaluation

* We may earn a commission through affiliate links. This doesn't affect our reviews.

The ranked picks

Editorial evaluation

Birch Organic Wool Topper

Birch by Helix · GOTS Certified Organic Wool + Organic Cotton Shell · 1.5 inches · Plush (3/10)

9.2/10

Birch's Organic Wool Topper layers GOTS-certified wool inside a soft organic cotton shell, creating a plush, naturally cooling cushion. Wool's hollow fibers regulate temperature in both summer and winter — wicking moisture away in heat and trapping warmth when chilly. Ideal for adding a cloud-like layer to a too-firm mattress without the heat retention of foam.

Pressure relief: 9.4/10

Support: 8.8/10

Cooling: 9.3/10

Durability: 9.2/10

Trial: 100 nights

Warranty: 10 years

$449

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Editorial evaluation

Avocado Alpaca Wool Mattress Topper

Avocado · 100% Alpaca Wool Fill + Organic Cotton Shell · 3 inches · Plush (3/10)

9.4/10

Avocado's most luxurious topper features sustainably sourced alpaca wool, which is naturally thermoregulating — warm in winter and cool in summer. Alpaca fibers are hollow, making them lighter and more insulating than sheep's wool, with a cashmere-like softness that transforms any mattress into a premium sleep experience.

Pressure relief: 9.6/10

Support: 8.9/10

Cooling: 9.5/10

Durability: 9.3/10

Trial: 100 nights

Warranty: 1 year

$934

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Editorial evaluation

Avocado Eco Organic Topper (Medium)

Avocado · GOLS Certified Organic Dunlop Latex · 2 inches · Medium (6/10)

9.2/10

The Avocado Eco Organic Topper in Medium firmness uses GOLS-certified Dunlop latex wrapped in a GOTS-certified organic cotton cover with organic wool quilting. Dunlop latex provides a denser, more supportive feel — ideal for those wanting to add responsiveness and support to a too-soft mattress.

Pressure relief: 9.1/10

Support: 9.4/10

Cooling: 9/10

Durability: 9.3/10

Trial: 100 nights

Warranty: 1 year

$449

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Editorial evaluation

Avocado Eco Organic Topper (Plush)

Avocado · Talalay Latex · 2 inches · Plush (4/10)

9.1/10

The Plush version of the Eco Organic Topper uses Talalay-process latex, which is lighter, softer, and more responsive than Dunlop. It adds a luxurious cushioned layer to firm mattresses while maintaining the natural breathability and hypoallergenic properties of latex.

Pressure relief: 9.4/10

Support: 8.8/10

Cooling: 9.1/10

Durability: 9.1/10

Trial: 100 nights

Warranty: 1 year

$549

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Editorial evaluation

Sleep On Latex Pure Green Topper

Sleep On Latex · 100% Natural Dunlop Latex · 2 inches (also 3 inches) · Soft / Medium / Firm

8.7/10

The Pure Green Topper is the most affordable genuine natural latex topper on the market. Available in three firmness levels and two thickness options, it's incredibly versatile. Dunlop latex sleeps cool, bounces back instantly, and outlasts memory foam toppers by years.

Pressure relief: 8.5/10

Support: 9/10

Cooling: 9.2/10

Durability: 9.5/10

Trial: 100 nights

Warranty: 5 years

$199

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Editorial evaluation

Avocado Down Mattress Topper

Avocado · Responsibly Sourced Down + Organic Cotton Shell · 3 inches · Plush (3/10)

9/10

For those who love the classic feel of sinking into a plush cloud, the Avocado Down Mattress Topper delivers. Filled with responsibly sourced down and encased in organic cotton, it adds a generous 3 inches of cushioning to any mattress.

Pressure relief: 9.4/10

Support: 8.3/10

Cooling: 8.9/10

Durability: 8.7/10

Trial: 100 nights

Warranty: 1 year

$499

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Toppers that did not clear the cooling bar

TEMPUR-Topper Supreme — its 7/10 cooling evaluation is below the 8.5/10 bar for this page.
Tempur-Pedic TEMPUR-Adapt Topper — its 8.4/10 cooling evaluation is below the 8.5/10 bar for this page.
Comfy Mattress Topper — its 8.3/10 cooling evaluation is below the 8.5/10 bar for this page.
Select High Density Mattress Topper — its 8/10 cooling evaluation is below the 8.5/10 bar for this page.
Deluxe Mattress Topper — its 8.2/10 cooling evaluation is below the 8.5/10 bar for this page.

These toppers are still in our full topper database — they simply do not fit this job.

Why material decides this and nothing else does

Heat builds up at the sleep surface because your body pumps out warmth all night and the surface either moves it away or holds it against you. Latex has an open-cell structure and is usually pin-cored, so air moves through it every time you shift. Wool moves moisture, which is what actually makes a bed feel clammy.

Memory foam is at the other end. It is dense by design — that density is what creates the slow contouring hug people buy it for — and dense material holds heat. Perforations and phase-change covers help at the surface, but the bulk of the foam behaves the same way.

A cooling topper on a hot mattress has a ceiling

A topper can only change the top two or three inches of your bed. If the mattress underneath is a thick slab of memory foam, you have added a breathable layer on top of a heat store, and you will feel the difference but not solve the problem.

The honest test: if your bed feels fine when you get in and hot after an hour, a cooling topper is likely to help. If it is hot from the moment you lie down, the mattress itself is the problem.

How we ranked these toppers

All 16 toppers in our database were scored first, then filtered. A topper that sleeps cool but is poor in every other respect still fails, because you sleep on the whole product.

Cooling evaluations weigh open-cell structure and airflow, fibre moisture handling, cover fabric, thickness (thicker traps more), and what owners consistently report about heat after several months.

We treat gel and copper infusions as small improvements rather than solutions. They measurably slow how fast foam warms up; they do not turn memory foam into a cool surface.

Best Cooling Mattress Toppers

What had to be true to qualify

The qualifying toppers compared