Best Cooling Mattress: What Actually Works and Why

Sleeping hot is one of the most common sleep complaints — and one of the most frequently misunderstood when it comes to mattress selection. "Cooling mattress" has become a marketing term used loosely, with products ranging from genuinely effective designs to mattresses with a thin gel layer and an optimistic label.

This guide explains why mattresses retain heat, which technologies make a real difference, how materials compare, and what to look for when shopping.

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01Why Mattresses Trap Heat

Body temperature naturally drops during sleep. When it can't — because the mattress retains heat rather than allowing it to dissipate — sleep quality suffers. You wake up, kick off covers, shift positions, and often feel like you're fighting the bed rather than resting in it.

Mattresses trap heat for a specific reason: foam is a poor conductor. When you lie on a foam mattress, your body heat transfers into the foam, and it stays there. The foam doesn't circulate, doesn't breathe, and doesn't move heat away from the body the way a more open structure would.

Dense memory foam is the most significant offender. Its slow-response, body-contouring properties are valuable for pressure relief, but they come with a tradeoff: the foam conforms closely to your body, reducing the space for air movement and concentrating heat at the contact points.

This isn't a flaw to hide — it's an honest tradeoff. The question is how different constructions address it.

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02Cooling Technologies: What They Do

Gel-Infused Foam

Gel is the most common cooling addition in foam mattresses. It's incorporated in two ways: gel particles dispersed throughout the foam, or a gel layer on top of the foam.

Gel helps move heat away from the body surface more quickly than untreated foam. It absorbs heat, which creates an initial cool-to-the-touch sensation. The limitation is that gel has a finite capacity — once it reaches equilibrium with your body temperature, the cooling effect diminishes.

Gel foam is a genuine improvement over standard memory foam, but it doesn't make a foam mattress equivalent to a hybrid or latex mattress in terms of temperature regulation.

Phase-Change Material (PCM)

Phase-change materials are more sophisticated than gel. PCMs absorb heat as they transition between states (typically from solid to liquid), which effectively draws heat away from the body throughout the night rather than just at first contact.

Tempur-Pedic uses phase-change material in their ProBreeze and LuxeBreeze lines. The cover and comfort layer work together to absorb excess body heat and release it when your temperature normalizes, actively moderating sleep temperature rather than just slowing heat buildup.

PCM-based cooling is among the most effective technologies currently available in consumer mattresses.

Open-Cell Foam

Traditional memory foam uses a closed-cell structure that traps air. Open-cell foam has a more porous structure that allows air to circulate through the material. This improves breathability compared to standard foam, though it doesn't match the airflow of a coil system.

Many newer foam mattresses use open-cell construction as a baseline, often combined with gel or PCM.

Coil Systems (Hybrid and Innerspring)

This is the most effective structural solution to heat retention. Innerspring and hybrid mattresses have a coil support core with open space for air to circulate. As you move during sleep, air moves through the coil layer. Body heat doesn't accumulate the way it does in a solid foam core.

Hybrid mattresses — which combine a coil base with foam or latex comfort layers — provide the pressure relief of foam with significantly better airflow than all-foam designs. For most warm sleepers, a hybrid with a quality comfort layer is a more effective cooling solution than an all-foam mattress with cooling additives.

Browse our hybrid mattress collection to see current options.

Latex

Natural latex has an open-cell structure that breathes better than memory foam. It also tends to respond more quickly to pressure changes — you sleep on top of it rather than sinking deeply into it, which reduces the body-surface contact area compared to memory foam and improves air circulation around the body.

Latex sleeps meaningfully cooler than memory foam and is comparable to hybrid designs in temperature regulation. It also lacks the gel additions that some people find gimmicky.

The downsides: latex is heavier, often more expensive, and has a distinct feel that some sleepers love and others don't.

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03Materials Ranked by Cooling Performance

From coolest to warmest, in general terms:

1. Innerspring (maximum airflow, minimal foam)
2. Hybrid with latex comfort layer (coil airflow + breathable latex)
3. Hybrid with foam comfort layer (coil airflow with some foam heat retention)
4. Latex (all-latex) (breathable, but no coil airflow)
5. Open-cell foam with gel or PCM (improved over standard foam, but limited)
6. Standard memory foam (lowest airflow, most heat retention)

Position on this list isn't absolute — a hybrid with a very thick, dense foam comfort layer may sleep warmer than a well-constructed open-cell foam mattress. But as a general framework, coil-based designs outperform foam-only designs for temperature regulation.

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04Breathable Covers and Fabrics

The mattress cover is in direct contact with your body. Its material affects how heat transfers between you and the mattress.

Polyester covers: Common, inexpensive, and generally poor at moisture management. They can feel warm and don't breathe well.

Tencel and modal fabrics: Plant-derived fibers with naturally good moisture-wicking properties. Many premium mattresses use Tencel in their covers specifically for its breathability and soft hand feel.

PCM-treated covers: Covers treated with phase-change material add an active cooling effect at the point of contact. Tempur-Pedic's SmartClimate covers are a notable example.

Organic cotton: Breathes better than polyester and is a common choice for natural mattress lines.

Cover material is worth paying attention to, but it's secondary to the core construction. A breathable cover on a hot foam mattress won't dramatically change your sleep temperature.

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05Bedroom Environment

The mattress is one part of the sleep temperature equation. Your bedroom environment matters too, and sometimes more than the mattress itself.

Room temperature: Sleep research generally points to bedroom temperatures in the mid-60s Fahrenheit as optimal for most people. Air conditioning, fans, and proper ventilation make a significant difference.

Bedding: Heavy, insulating comforters trap heat regardless of mattress construction. Lightweight, breathable duvets or top sheets allow better temperature regulation.

Foundation and bed frame: Platform beds with solid surfaces can restrict airflow to the mattress bottom. Slatted frames or adjustable bases with open structures allow better ventilation.

Mattress protectors: Some waterproof mattress protectors use plastic membranes that trap heat and create a warm, slightly sweaty feel. Look for protectors with breathable, fabric-based waterproof layers rather than plastic sheeting.

If you've addressed the environment and are still sleeping hot, that's when mattress construction becomes the primary lever.

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06Brand Recommendations for Cooling

Tempur-Pedic ProBreeze and LuxeBreeze

These are Tempur-Pedic's dedicated cooling models. Both use phase-change material in the cover and a ventilated TEMPUR comfort layer. The LuxeBreeze adds an additional cooling layer and is designed to sleep up to 8 degrees cooler than standard TEMPUR models.

This is significant because standard Tempur-Pedic mattresses are among the warmer options on the market — the proprietary TEMPUR foam conforms closely and retains heat. The ProBreeze and LuxeBreeze address this directly.

Browse Tempur-Pedic mattresses.

Helix Midnight Luxe and Helix Dawn Luxe

Helix's Luxe tier uses a zoned coil system topped with Tencel covers and GlacioTex cooling fabric. The coil base provides natural airflow, and the cooling cover adds surface-level temperature management. For warm side sleepers, the Midnight Luxe is worth evaluating.

Browse Helix mattresses.

Stearns & Foster (Hybrid Options)

Stearns & Foster's hybrid models combine their individually wrapped coil systems with foam comfort layers. The coil core provides natural ventilation that their all-foam competitors can't match. Their Premium Plush and Luxury Firm hybrid options are among the better-balanced choices for warm sleepers who want support and comfort along with temperature regulation.

Browse Stearns & Foster mattresses.

Sealy (Hybrid and Innerspring)

Sealy's Posturepedic hybrids include cooling gel foam in the comfort layer over their coil-on-coil system. The layered coil approach enhances airflow compared to standard single-layer coil systems.

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07Who Benefits Most from a Cooling Mattress

A dedicated cooling mattress is worth prioritizing if:

• You regularly wake up hot or sweaty during the night
• You currently sleep on an all-foam mattress and have noticed warmth as an issue
• You share a bed and one or both partners tend to sleep warm
• You live somewhere that gets consistently warm at night and don't want to depend entirely on air conditioning

If you sleep comfortably temperature-wise on your current mattress, cooling features may not be worth paying a premium for.

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08Testing In Person

Temperature regulation is genuinely difficult to assess in a showroom — you're not going to sleep for eight hours on a mattress in a store. But you can compare materials side by side, feel the difference between a foam mattress and a hybrid, and evaluate cover materials.

Our staff at any of the five LA Mattress Store showrooms can walk you through the cooling features of specific models and explain the construction differences. If you come in and tell us that sleeping hot is your primary complaint, we'll focus the conversation on options that address it.

No appointment needed. Browse current options in our cooling mattress collection.

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09FAQ

Do cooling mattresses actually work?

It depends on the technology. Hybrid mattresses with coil support cores sleep genuinely cooler than all-foam designs because the coil system allows air to circulate. Phase-change material covers (like those in Tempur-Pedic's ProBreeze) actively moderate temperature throughout the night. Thin gel layers provide some initial cooling but have limited ongoing effect.

Is a hybrid cooler than memory foam?

Generally, yes. The coil support system in a hybrid allows air to circulate through the base, which significantly reduces heat buildup compared to a solid foam core. The comfort layer material matters too — latex on top of coils sleeps cooler than thick foam layers.

What's the coolest mattress material?

Traditional innerspring mattresses have the most airflow, but they're not ideal for pressure relief. Among practical options for most sleepers, hybrids with latex or thin foam comfort layers offer the best combination of cooling and comfort. Natural latex is also a good choice if you prefer an all-foam feel with better breathability.

Can a mattress protector make me sleep hotter?

Yes. Some waterproof protectors use plastic membranes that trap heat and create a warm, sticky feel. Look for protectors marketed as breathable, with fabric-based waterproofing. Quality Tencel or cotton-faced protectors are significantly cooler than plastic-backed options.

Do I need to spend more to get a cooler mattress?

Not necessarily. A hybrid at a mid-range price point often sleeps cooler than a premium all-foam mattress because of the coil construction. That said, the most effective cooling technologies — PCM covers, open-cell TEMPUR foam — are found in higher-end models.

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