Key takeaways

• Heat retention starts with the mattress itself. Dense foam and poor airflow are the main culprits.
• A cooler surface helps your body regulate temperature and improves sleep quality.
• Look for phase-change materials (PCM), gel/copper/graphite infusions, airflow construction, or moisture-wicking covers.
• Hybrids with coil systems sleep cooler than all-foam mattresses while maintaining support.
• All-foam mattresses need stronger cooling tech to compensate for heat retention.
• Cooling toppers work if your mattress has good support but sleeps hot. Water or air systems cool the most.
• Cooling matters, but don’t ignore support, pressure relief, and overall mattress condition. A topper won’t fix structural problems.

Struggling with night sweats, constant tossing and turning, or waking up feeling uncomfortably warm is a common experience that disrupts healthy rest. When your bed traps body heat, your sleep quality inevitably suffers. For hot sleepers, standard bedding materials often act as insulators, turning a comfortable bed into a heat trap by the middle of the night.

Solving this starts with understanding how different materials and features handle temperature regulation. Options range from a cooling mattress to a cooling mattress topper or cooling mattress pad. Comparing these products and matching them to your sleep habits can help you choose the right fit before you buy.

This guide provides a detailed examination of cooling sleep products. It explains how advanced materials dissipate heat, compares different mattress constructions, and offers practical advice on choosing the best cooling mattress for hot sleepers based on budget, firmness preferences, and physical support needs.

The biological mechanics of sleep and body temperature

A cooling mattress or pad addresses a basic sleep issue. Your body needs to drop its core temperature to fall asleep and stay asleep, but many mattresses trap the heat you release throughout the night.

Your circadian rhythm, which controls the sleep-wake cycle, is closely linked to core body temperature. Near bedtime, core temperature begins to drop, signaling the body to prepare for rest. During the night, the body continues releasing heat to maintain that lower temperature.

Why heat buildup occurs

When you lie down, the side of your body against the mattress has limited exposure to open air. The heat your body releases transfers into the mattress surface. If the materials do not breathe or release that heat, such as traditional closed-cell memory foam or dense synthetic fibers, warmth can build up.

As heat collects in the top layers of the mattress, the surface warms and transfers heat back to your skin. This can raise surface body temperature, trigger sweating, and disrupt sleep.

For people who naturally sleep hot, experience hormonal changes, or live in warm climates, this can be an ongoing issue. A cooling sleep surface is designed to help by drawing heat away from the body or improving airflow so heat can escape.

How mattress cooling technologies work

Shoppers looking for the best cooling mattress will see many marketing terms and proprietary technology names. Most cooling features fall into four categories:

• Phase-change materials
• Conductive infusions
• Airflow-focused construction
• Moisture-wicking covers

Ashley’s mattress collection options include a range of materials and constructions, so it’s helpful to compare each model’s cooling features the same way you would any other mattress.

Knowing how these components work can help you tell the difference between a mattress that regulates temperature and one that only feels cool at first touch.

Phase-change materials (PCMs)

Phase-change materials are among the most advanced cooling technologies used in bedding. Originally developed for industrial and aerospace use, PCMs absorb, store, and release heat to help maintain a more consistent surface temperature.

When your skin contacts a cover or foam layer treated with PCMs, the material absorbs excess body heat. As it does, the microscopic capsules change state, often from solid to semi-liquid, drawing heat away from the body.

This creates a surface that adjusts to your temperature. If you warm up, it pulls heat away. If your skin cools down, it can release stored heat back, helping maintain a more temperature-neutral sleep environment. Mattresses with PCMs often feel noticeably cool to the touch.

Thermal conductive infusions

Traditional memory foam is known for trapping heat. To reduce this, manufacturers often add conductive materials to the foam so heat can move away from the sleep surface.

• Gel-infused foam: One of the most common cooling features in modern bedding, gel can appear as beads, swirls, or solid layers in a mattress or topper. It absorbs initial body heat and slows the warming effect of foam. However, it can still warm up over time if the mattress does not have good overall airflow.
• Copper-infused foam: Copper conducts heat well. When added to foam, it helps move body heat away from the sleeper and disperse it through a wider area of the mattress. Copper also has natural antimicrobial properties, which may help reduce bacteria buildup linked to night sweats.
• Graphite-infused foam: Like copper, graphite is highly conductive. It is often used to pull heat away from the top comfort layers and transfer it downward quickly, making it useful for hot sleepers seeking fast cooling relief.

Structural breathability and airflow

Even with cooling infusions, a mattress still needs room for heat to escape. Airflow is essential for long-term temperature regulation.

• Open-cell foam: Traditional polyurethane foam has a closed-cell structure that can trap air and heat. Open-cell memory foam is made with interconnected cells that allow more ventilation. As you move, warm air is pushed out and cooler air can flow back in.
• Coil support systems: The mattress support core also affects breathability. A hybrid mattress uses steel coils instead of a solid high-density foam base, which usually allows more airflow. The open space between pocketed coils helps heat escape and supports better air circulation throughout the mattress.

Moisture-wicking and breathable covers

The mattress cover is the top layer and your first point of contact. The best cooling mattresses often use fabrics designed to manage moisture and improve airflow.

Common cooling cover materials include Tencel, organic cotton, bamboo-derived rayon, and performance synthetic blends. These fabrics are breathable and moisture-wicking. For people who experience night sweats, they help pull moisture away from the skin so it can evaporate more quickly, creating a cooler feel.

Many premium mattresses pair these breathable fabrics with phase-change materials, allowing the cover to manage both heat and moisture at the same time.

Evaluating the best cooling mattress for hot sleepers

If your current bed is trapping heat, sagging, or causing discomfort, upgrading to a dedicated cooling mattress is usually the most effective long-term solution. However, not all mattress constructions are created equal when it comes to temperature management.

The hybrid mattress advantage

For the vast majority of hot sleepers, a hybrid mattress represents the ideal balance of pressure relief and temperature regulation. Hybrids combine a supportive innerspring coil system with comfort layers made of memory foam, latex, or polyfoam.

Because the bottom half to two-thirds of the mattress consists of pocketed coils, there is a constant flow of air moving through the center of the bed. This airflow prevents the upper foam layers from retaining too much heat. High-quality hybrid models often feature gel-infused or open-cell foam on top of the coils to maximize the cooling effect.

For example, models like the Ashley Sleep Align and Nectar Premier use advanced cooling technology alongside pressure-relieving comfort layers. The Ashley Sleep line features gel memory foam and moisture-wicking covers that pull heat away from the body, while Nectar incorporates copper-infused foam for better temperature regulation. Both options include strong edge support that keeps the mattress stable when you sit or sleep near the edges.

Memory foam mattress considerations

An all-foam or memory foam mattress provides excellent pressure relief and motion isolation. When you sleep with a partner, an all-foam bed prevents their tossing and turning from transferring across the surface and waking you up.

However, all-foam beds historically sleep much hotter than hybrids. Because they rely on a dense block of polyurethane foam for support rather than coils, there is very little room for internal airflow.

If you prefer the deep, contouring feel of memory foam but sleep hot, look for heavily engineered options. High-end beds like the TEMPUR-LuxeBreeze and TEMPUR-ProBreeze use advanced Pure Cool Plus material and heat-diffusing layers to overcome foam’s heat retention. The TEMPUR-LuxeBreeze keeps you up to 10 degrees cooler throughout the night, while the TEMPUR-ProBreeze offers proven all-night cooling with cool-to-touch removable covers. Both pull heat away from your body, making them strong options for hot sleepers who want the classic memory foam feel.

Cooling mattress toppers

If your current mattress is still highly supportive and in good physical condition, but it simply sleeps too warm, replacing the entire bed may not be necessary. A cooling mattress topper can alter the surface temperature of your bed at a fraction of the retail price of a new mattress.

Do cooling mattress toppers work?

A common question among shoppers is whether adding a layer on top of a mattress can genuinely reduce heat. The answer is yes, provided you choose the right materials. A mattress topper acts as a buffer between your body and a heat-trapping mattress. If your mattress is made of dense, traditional memory foam that causes night sweats, placing a highly breathable, temperature-regulating topper over it will dramatically change how the bed feels against your skin.

However, a topper cannot fix a mattress that is sagging or lacks structural support. It is strictly a solution for altering the comfort and temperature of the sleep surface.

Types of cooling mattress toppers

When shopping for a cooling mattress topper, you’ll typically choose between passive cooling materials and active cooling systems.

• Gel-infused memory foam toppers: These common toppers are usually two to four inches thick. They use open-cell foam with gel to help pull heat away from the body. They also add softness to a firm mattress while providing moderate cooling.
• Latex toppers: Latex is naturally breathable and temperature-neutral. A latex topper can make a mattress feel bouncier and more responsive while sleeping cooler than standard foam.
• Active cooling systems: For hot sleepers who need more relief, active cooling toppers offer the most powerful option. These systems use a bedside unit to move temperature-controlled water or air through a specialized pad. You can usually adjust the surface temperature precisely. They cost more, but they can be especially helpful for people with night sweats or hot flashes.

How sleep position impacts temperature regulation

When searching for the best cooling mattress for hot sleepers, you cannot solely focus on the cooling technologies. The mattress must also support your specific sleep position. Interestingly, your sleep position influences how hot you feel during the night.

Side sleepers

Side sleepers need a softer, more pressure-relieving mattress to cushion the shoulders and hips. Because they sink deeper into the comfort layers, more body heat can get trapped around the body. That creates a common challenge for hot sleepers: the pressure relief side sleepers need can also increase heat buildup.

For this reason, the best cooling mattress for side sleepers is often a luxury hybrid mattress with thick cooling foam layers on top. Features like phase-change materials or gel infusions can help offset retained heat, while coils underneath improve airflow.

Back sleepers and stomach sleepers

Back and stomach sleepers usually need a firmer mattress to keep the spine aligned. If a stomach sleeper uses a mattress that is too soft, the hips can sink too deeply and strain the lower back. These sleepers also tend to rest more on top of the mattress instead of sinking into it. With less foam around the body, more heat can escape into the air.

For that reason, a firm or medium-firm mattress with a breathable cover and supportive coils is often enough. They may not need advanced cooling materials to stay comfortable.

Combination sleepers

Combination sleepers change positions throughout the night, so they need a responsive mattress that makes movement easy. Traditional memory foam can feel restrictive because it creates a body impression that takes more effort to move out of, which can also trap heat.

A better cooling choice for combination sleepers is a responsive material like natural latex or a bouncy polyfoam hybrid. These materials adjust quickly, reduce heat buildup, and help you change positions more easily.

Balancing cooling with other essential mattress features

When investing in a new bed or a premium cooling mattress topper, temperature regulation should not be your only metric for evaluation. A mattress can be ice-cold, but if it fails to provide proper support or causes motion disturbances, your sleep will still suffer. When analyzing firmness options and comparing retail prices, keep the following performance factors in mind.

Motion isolation vs. motion transfer

Motion transfer is how much movement you feel when a partner moves on the other side of the bed. Memory foam excels at motion isolation by absorbing movement before it spreads across the mattress.

Traditional dense memory foam, however, can sleep hot. Innerspring mattresses usually stay cooler because airflow moves freely through the coils, but they often transfer more motion.

For a balance of cooling and motion isolation, couples should consider a mattress with individually pocketed coils. Each coil moves independently, so when one person shifts, only the nearby coils respond. This helps reduce motion transfer while maintaining the airflow hot sleepers often need.

Edge support

Edge support determines how stable the mattress perimeter feels. With poor edge support, the side can sink deeply when you sit down and make the bed feel smaller by creating a roll-off sensation near the edge.

Many cooling mattresses strengthen the perimeter with high-density foam rails or thicker, lower-gauge coils. For hot sleepers sharing a bed, strong edge support helps both partners use the full mattress width and maintain more space between their bodies, which can reduce heat buildup.

The importance of complementary bedding

A common mistake is investing in a cooling mattress or mattress pad, then reducing its benefits with the wrong bedding.

Bed temperature works as a system. Your mattress needs airflow to release heat and moisture-wicking fabrics to help regulate temperature.

Choosing the right sheets

If you place tightly woven, high-thread-count polyester sheets over a mattress featuring advanced phase-change materials, the mattress will fail to keep you cool. Synthetic fabrics like polyester trap heat instantly and do not allow the mattress cover to breathe.

To maximize the performance of a cooling mattress, you must pair it with highly breathable sheets. Linen, percale cotton, Tencel, and bamboo-derived sheets are excellent choices. Percale cotton, in particular, uses a simple over-under weave that leaves plenty of room for air to flow through the fabric.

Blankets and comforters

Similarly, heavy down comforters will trap a massive amount of body heat against your skin. Even if your mattress is actively pulling heat away from your underside, a heavy blanket will cause you to overheat from the top down. Consider switching to a lightweight, breathable quilt or a comforter filled with temperature-regulating wool or down-alternative fibers designed for hot sleepers.

Care and maintenance for cooling sleep products

Maintaining the temperature-regulating properties of your sleep setup requires specific care routines. Harsh chemicals and high heat can easily destroy the advanced materials used in modern cooling beds.

Washing a cooling mattress pad or topper cover

If your cooling mattress pad or topper has a removable cover, follow the manufacturer’s care instructions. High dryer heat can damage phase-change materials and moisture-wicking fibers, reducing cooling performance.

In most cases, wash cooling covers in cold water on a gentle cycle with mild detergent. Avoid fabric softener and bleach, which can coat or damage the fibers. Air dry when possible, or tumble dry on the lowest heat setting.

Always read manufacturer instructions and warranty details before proceeding.

Protecting the mattress

Use a mattress protector to guard against sweat, body oils, and spills, which can damage the mattress and may void the warranty. Standard waterproof protectors often trap heat.

Choose a breathable mattress protector designed for cooling performance. Some brands offer protectors made to pair with their cooling mattresses and covers. These models use tiny pores to block liquids while still allowing airflow, helping the bed stay cooler.

Always read manufacturer instructions and warranty details before proceeding.

Is it time for a cooling mattress?

Finding the ideal solution for sleeping hot requires a thorough understanding of your own needs, preferences, and budget constraints.

If your current mattress is old, sagging, or causing you physical pain alongside night sweats, investing in a completely new cooling mattress particularly a breathable hybrid mattress with advanced phase-change materials is the most effective course of action. Pay close attention to firmness options and ensure the bed provides proper support for whether you are a side sleeper, back sleeper, or combination sleeper. You can explore all mattresses options at Ashley if you want to compare different comfort levels and support features before making a decision.

If your mattress is structurally sound and provides excellent support, but simply sleeps too warmly, a cooling mattress topper offers a substantial upgrade. Whether you choose responsive latex or gel-infused foam, a topper will introduce a breathable layer between your body and the dense mattress below, significantly improving airflow.

Finally, for those looking for an easy, budget-friendly improvement, swapping out a basic, heat-trapping protector for a high-quality, moisture-wicking cooling mattress pad can provide the subtle temperature reduction and moisture control needed to rest comfortably.

By comparing materials, considering airflow, and pairing your choice with breathable bedding, you can create a cooler, more comfortable sleep environment.