What is a Cooling Mattress?

August 27, 2021 | Casper Editorial Team

Does this sound familiar? One moment you’re peacefully asleep, and the next you’re startling awake, damp with sweat, wondering if you accidentally dozed off in the Sahara. If this happens once in a blue moon, you might be suffering from a mild fever, overly warm flannel PJs, or one too many layers of bedding. But if you routinely wake up overheated with no apparent cause, it may be time to switch to a cooling mattress type.

So how do cooling mattresses work? These advanced bed types use temperature-regulating materials, such as gels and memory foams, to draw heat away from you for a cooler sleep. As a result, your body temperature remains lower throughout the night, improving both comfort levels and sleep quality. 

In this blog post, we’ll walk you through all you need to know about cooling mattresses, from their mechanics to their benefits. Soon, you’ll realize sleeping has never been cooler.

How Do Cooling Mattresses Work?

To understand how cooling mattresses work for the average hot sleeper, it’s helpful to know a bit about the body’s thermoregulatory abilities—don’t worry, this isn’t about to become a college-level science course.

Simply put, the human body has an average temperature of 98.6 degrees Fahrenheit, which is hotter than most objects it comes in contact with. When we sleep under blankets or in particularly hot conditions, our body’s temperature can increase, which often leads to more heat retention and a poor sleeping experience. Because of this occurrence, many people look to cooling mattresses, bedding and blankets to help keep them cool.

By using gels and foams, cooling mattresses pull heat away from our beds and bodies, keeping us cool throughout the night. 

Let’s break down the typical components of cooling mattresses even further:1

  • The core – Cooling mattresses can be made from several different cores, from innerspring to foam to hybrids. Although each has different cooling properties, they are generally used in conjunction with each other and with different materials to provide the coolest experience possible.
  • The topmost layer – Like the core, the topmost layer of cooling mattresses can be made with several different materials, including gels, metallic materials, “phase change molecules,” and natural fibers. Gel memory foam is the most common.

Benefits of Cooling Mattresses

At this point, you may be asking, do cooling mattresses really work to reduce heat retention? Through extensive research and testing of our Casper Snow Cooling System, we can say, unequivocally, yes

Just look at all the available benefits:

  • Better sleep quality – Cooling mattresses improve sleep quality by dispersing heat, which prevents you from overheating. Casper’s HeatDelete™Bands are particularly effective at keeping you comfortable all night long.
  • Lower air conditioning bill – Not only will cooling mattresses keep your body temperature from getting too high, but they may also keep your air conditioning bill in check.
  • Reduced night sweats – By keeping you cool, cooling mattresses may reduce your night sweats. In fact, the Wave Hybrid Snow mattress from Casper has been proven to remove 34% more heat from under the covers. You’ll finally be able to sleep through the night—no sweat.

Instead of just telling you that it works, we’d rather show you how. Let’s take a look at some cooling mattresses guaranteed to bring you cooler sleep for longer: the Nova Hybrid Snow Mattress and the Wave Hybrid Snow Mattress from Casper.

Nova Hybrid Snow Mattress

The most soothing mattress from Casper, the Nova Hybrid Snow Mattress is a dissertation on comfort. Unlike any traditional mattress, this soothing and supportive mattress type makes sleep cool again by combining four layers of foam with Casper’s Snow Technology—the most advanced cooling system designed for all night temperature regulation. 

Casper’s Snow Technology works using the following innovations:

  • QuickCool™ Cover: A mattress topper unlike any other, the QuickCool™ Cover combines breathable fabric with phase change material to disperse heat immediately, creating an exceptionally cool experience every time you get in bed.
  • HeatDelete™ Bands: Acting like thermal highways, HeatDelete™ Bands direct heat away from your body, helping you sleep at the perfect temperature for 12+ hours.

By fusing Snow Technology with the comforts of a hybrid mattress, the Nova Hybrid Snow is one of the coolest mattresses out there.

Wave Hybrid Snow Mattress

If the Nova Hybrid Snow is the most soothing mattress from Casper, the Wave Hybrid Snow is the most supportive. In addition to using Snow Technology, this tried-and-tested mattress uses Zoned Support™ Max + cooling gel pods to deliver our coolest, most supportive sleeping experience possible. 

The Wave Hybrid Snow mattress’ cooling technology rests on five layers of foam:

  • A top comfort layer of breathable polyurethane foam
  • A second layer of natural latex
  • A third layer of zoned memory foam
  • A fourth layer of polyurethane foam with gel pods
  • A base layer of foam with encased springs

Coupled with Snow Technology, these five layers provide unparalleled support and pressure relief while delivering a nighttime sleep that’s six degrees cooler for at least 12 hours. As if that’s not enough, the Wave Hybrid Snow also uses AirScape™ 3 and cooling gel to circulate air away from you, keeping your mattress cool to the touch. 

Trust Us, It’s Cool

If you’re tired of waking up on the right side of the bed but the wrong side of the thermostat, it may be time to switch to a cooling mattress, whether that be a memory foam mattress or cool gel mattress. Not only do they provide exceptional support, but their cooling features are also designed to help you sleep cooler for longer. And the best part? You can have one of the best cooling mattresses on the market at an equally refreshing price by choosing mattress manufacturers like Casper.

From the soothing plush Nova Hybrid Snow Mattress to the incredibly supportive Wave Hybrid Snow Mattress, Casper’s one-of-a-kind Snow Technology makes sleeping cooler than you ever thought possible. As a hot sleeper, all you need next is the best cooling bedding to pair with your new comfort layer mattress! If you have ever wondered, do cooling sheets work well? And if so, what is the best thread count for cool sheets? We have you covered!


  1. Muse. The Core of the Cooling: What are cooling mattresses made of? https://musesleep.com/blogs/daily-muse/the-core-of-the-cooling-what-are-cooling-mattresses-made-of