Some mattress toppers trap heat, and others do not; the material is the reason. Memory foam is the material most likely to make you sleep warm because its dense structure traps body heat close to the surface. Natural latex and wool breathe far better, so they resist the trapped-heat feeling that makes foam toppers uncomfortable for warm sleepers.
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Heat builds up when air cannot move. Dense, slow-responding materials like memory foam wrap closely around the body and hold warmth against the skin, and added gels or infusions usually slow that warming rather than prevent it. A topper that sleeps cooler is one that lets air circulate and does not conform so tightly that heat has nowhere to go.
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Latex has an open structure that allows air to move through it, so it does not hold heat the way memory foam does. It also responds quickly rather than molding tightly around the body, leaving more room for airflow at the surface. For sleepers who run warm, latex is one of the more comfortable topper materials, delivering pressure relief without the heat foam often brings.
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Both of our latex types breathe well. Pure Talalay® has a slightly more open feel and airy structure, which many warm sleepers prefer. Organic Dunlop is denser and firmer while still far more breathable than foam. If sleeping cool is a top priority alongside a soft, cushioning feel, Talalay is the natural pick; if you want firmer support that still breathes, Dunlop delivers it.
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Pair the topper with breathable bedding, since heavy synthetic sheets can undo a breathable topper. Use a cotton or other natural-fiber sheet, keep the room ventilated, and choose a natural-fiber protector rather than a plastic-backed one that blocks airflow. Choosing a breathable material in the first place does the most, but bedding around it matters too.

The Avocado Eco Organic Topper holds the same finished-product certifications as our mattresses: GOTS, OEKO-TEX® Standard 100 Class I, MADE SAFE®, EWG Verified®, GREENGUARD Gold, and UL® Formaldehyde-Free. It is also Certified Vegan by Vegan Action® and PETA®-approved. The Dunlop latex inside is GOLS-certified organic and FSC®-certified, and the Pure Talalay® latex is FSC-certified.

Some do. Memory foam toppers tend to trap heat, while natural latex and wool breathe and resist warming. The material determines whether a topper sleeps warm or stays comfortable.

Natural latex and wool are among the most breathable topper materials. Latex has an open structure that allows airflow, and wool wicks moisture and helps regulate temperature.

Latex breathes far better than memory foam and does not trap heat the same way. Its open structure allows air to move through it, which helps the surface stay more comfortable for warm sleepers.

Most rely on breathability and airflow rather than active cooling. Open, breathable materials let heat escape, while gel infusions in foam mainly slow how fast the surface warms rather than keeping it cool all night.

Start with a breathable material like latex, then use natural-fiber sheets and a breathable protector, and keep the room ventilated. Plastic-backed protectors and heavy synthetic bedding can trap heat even over a breathable topper.