Best Cooling Mattresses 2020

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There are plenty of reasons why people sleep hot; it could be that their heater is on blast or their bedding is too heavy. Another common culprit? Mattresses!

Some types of mattresses, such as those that feature memory foam, have a tendency to sleep hot and direct it back at sleepers; this can cause people to wake up in the middle of the night, covered in sweat.Sweating In Your Sleep

That being said, there are a number of mattresses that are a particularly good match for hot sleepers. Out of the numerous mattresses I have reviewed, I found nine that should make for a cooler night of sleep!

Read on for my list of the best cooling mattresses!

9 Picks For Best Cooling Mattress

Best Cooling Hybrid Mattress
Helix
Helix
Helix

Helix will customize a mattress to meet each customer's needs; they can make a mattress more cooling for hot sleepers.

Doesn't expire

Best Cooling Memory Foam Mattress
Nectar
Nectar
Nectar

Nectar is a memory foam mattress that features a gel infusion and Tencel cover to help people sleep cool during the night.

Doesn't expire

Best Cooling Innerspring Mattress
Saatva
Saatva
Saatva

The Saatva is an innerspring mattress that allows for a good amount of airflow; this keeps the mattress from trapping too much heat. 

Doesn't expire

Best Mattress for Back Pain and Cooling
Leesa
Leesa
Leesa

The Leesa is a comfortable all-foam mattress that features a proprietary breathable foam called LSA200 that should not trap heat and should also help with back pain.

Doesn't expire

Best Organic Mattress
Birch by Helix
Birch by Helix
Birch by Helix

The Birch by Helix is a cooling organic mattress that is also firm and supportive. 

Doesn't expire

Best Customizable Mattress
Amerisleep
Amerisleep
Amerisleep

The Amerisleep mattresses feature bio-based and open-celled memory foam that are designed to dissipate heat. 

Doesn't expire

Best Cooling Firm Mattress
Purple
Purple
Purple

The Purple's gel grid is firmer and also promotes airflow through the mattress, making for an almost completely temperature-neutral sleeping surface. 

Doesn't expire

Best Cooling Latex Mattress
Zenhaven
Zenhaven
Zenhaven

The Zenhaven is a flippable, all-natural latex mattress that is both eco-friendly, supportive, and natural cooling. 

Doesn't expire

Best Cooling Mattress for Side Sleepers
Brooklyn Bedding Aurora
Brooklyn Bedding Aurora
Brooklyn Bedding Aurora

The Brooklyn Bedding Aurora is a comfortable mattress that contains effective cooling materials such as Phase Change Material. 

Doesn't expire

 

Top Picks Compared

The following nine mattresses should all be good options for hot sleepers. However, there is no one right mattress for all hot sleepers; keep reading to see our list broken down by mattress construction and cooling materials.

Best Cooling Hybrid Mattress

Helix

Mattress shopping can be an extremely daunting affair; for those customers who just can’t decide on what they want or need, Helix is there to help. Logging onto their website, customers have two options – they can participate in a sleep quiz or select from one of Helix’s many mattress models – for those who take the sleep quiz, Helix will customize a mattress based on their answers.

During the sleep quiz, customers will answer questions regarding sleeping position, sleeping partners and, yes, even sleep temperature; people who sleep hot can just check that box, and Helix will send a mattress that is breathable and designed to sleep cool!

Those who are particularly worried about sleeping hot can also opt for a Helix Luxe upgrade; this adds several hundred dollars to the price tag but comes with more high-end materials such as a breathable, cooling Tencel cover.

With the Helix mattresses, hot sleepers of various sleeping positions and body types should find what they are looking for!

What Makes Helix Stand Out?

  • Helix is all about flexibility and customization; customers have numerous mattresses to choose from or can take a sleep quiz, and the company will send the best mattress.
  • Hot sleepers can specify that they require a cooling mattress during their sleep quiz, and Helix will accommodate.
  • The Luxe upgrade to any Helix mattress includes a Tencel cover which will add another level of cooling.

Read the full Helix mattress review 

Helix Deals
Helix
Helix
Helix

Helix provides customizable mattresses that can be a great fit for any type of sleeper; click the link below for the best deal on a Helix mattress. 

Best Cooling Memory Foam Mattress

Nectar

Memory foam is a material that is known for trapping heat. Because of this, many hot sleepers shy away from memory foam mattresses. That being said, they shouldn’t have an issue with the Nectar mattress. 

While the Nectar is a memory foam mattress, it does contain cooling materials that should keep it from trapping heat at night. The top memory foam layer contains a gel infusion that will help with heat dissipation. The cover features Tencel material that is extremely breathable and also helps with cooling. 

The Nectar is also simply a comfortable mattress. Its multiple layers of memory foam should provide comfort for side sleepers and those who simply like a softer mattress. 

What Makes Nectar Stand Out?

  • The memory foam mattress features gel and a cooling cover to keep it from sleeping hot. 
  • The Nectar offers the soft comfort and pressure relief many people associate with memory foam. 
  • The Nectar mattress is a high-quality memory foam mattress that is sold for a value price. 

Read the full Nectar mattress review 

Nectar Mattress Deals
Nectar
Nectar
Nectar

Nectar is a very comfortable memory foam mattress that happens to also be an amazing value, and customers can get the best deal on the Nectar plus two premium pillows by clicking the link below.

Best Cooling Innerspring Mattress

Saatva

Many of the mattresses already mentioned have more of that soft foam feel; what about those who prefer something like a traditional innerspring mattress? Well, that’s why I wanted to add the Saatva mattress to this list; it is an innerspring mattress with two sets of coils and a soft, Euro-style pillow top.

Coils are something that hot sleepers should consider in a mattress because they allow room for airflow; with its dual layer of coils, the Saatva promotes a fantastic amount of airflow. This will help keep the Saatva from holding onto so much heat and directing it back at sleepers.

Lying on the Saatva, it feels more like one is sleeping on top of the mattress, not inside it – sinking into a soft memory foam mattress, less of one’s body is exposed to cooling air – on the Saatva, more air is allowed to flow over the body.

Also, with its coils and pillow top, the Saatva features an excellent balance of comfort and support; this makes the mattress ideal for combination sleepers. Back sleepers and stomach sleepers will receive the requisite amount of support from the coils; side sleepers will get enough pressure relief from the pillow top.

Hot sleepers who like the feel of an innerspring mattress should look no further than the Saatva.

What Makes Saatva Stand Out?

  • The mattress features two sets of steel coils that promote airflow throughout the mattress.
  • The Saatva should be an excellent option for combination sleepers.
  • It is an innerspring mattress with a pillow top and has a very traditional look and feel.

Read the full Saatva mattress review

$100 Off
Saatva
Saatva
Saatva

Saatva is a great value that happens to be both comfortable and supportive at the same time.  You can save $100 on a Saatva mattress simply by clicking the link below.

Best Mattress for Back Pain and Cooling

Leesa

Foam mattresses can be extremely comfortable, but they often have one major drawback: they sleep hot. Foam mattresses, especially those that feature memory foam can trap heat and direct it back at sleepers, making for a very uncomfortable night of sleep.

Those who want a foam mattress but worry about overheating at night should consider the Leesa because it contains a very interesting proprietary foam called LSA200. It is designed to be more breathable than standard memory foam, so it should not be sleeping too hot. What’s more, the LSA200 is more responsive than memory foam, so sleepers should not be getting stuck in the mattress.

Back sleepers, especially those who struggle with back pain, should also enjoy the Leesa because of its balance of comfort and support. Back sleepers will feel great support under their body while the foam contours to their curves. They should also feel extra lumbar support, which can help prevent back pain. 

What Makes The Leesa Stand Out?

  • The Leesa mattress features a proprietary LSA200 foam that is more breathable and cooling than standard memory foam.
  • The LSA200 makes the Leesa more responsive than memory foam, so people should not be getting stuck in the mattress.
  • The Leesa mattress is a great match for those who struggle with back pain. 

Read the full Leesa mattress review

$160 Off
Leesa
Leesa
Leesa

Leesa is a very comfortable mattress that I think a lot of people are going to really like.  You can get $160 off the Leesa mattress simply by clicking the link below.

Best Organic Mattress

Birch By Helix

One of the ways to sleep cooler is to find a mattress that doesn’t let sleepers sink in too much. A firmer latex mattress like the Birch by Helix lets sleepers sleep “on top” of the mattress so that more air can flow over their bodies. 

The organic materials found in the Birch by Helix should also help with cooling in their own right. The Talalay latex on top of the mattress is a breathable material that should not trap heat. The coils in the support layer should also allow for a fantastic amount of airflow. 

Talalay latex is also an extremely durable material, so the Birch should not sag too quickly. It is also much better for the environment than other mattress materials. Those who need a cooling mattress that eco-friendly and sound investment should consider the Birch by Helix. 

What Makes The Birch By Helix Stand Out?

  • The Birch by Helix is a firmer latex mattress that should provide enough support for larger people
  • The Birch by Helix contains organic, eco-friendly materials. 
  • The Birch’s firmness and cooling materials should keep sleepers from overheating at night. 
  • The Birch by Helix is an extremely durable mattress that should be a longer-lasting investment. 

Read the full Birch by Helix mattress review 

$200 Off
Birch
Birch
Birch

The Birch is a comfortable and supportive latex mattress. Save $200 on the Birch by clicking the button below. 

Best Customizable Mattress

Amerisleep

I mentioned above that memory foam is not always the best when it comes to sleeping cool – that being said, there are still some fantastic memory foam mattresses for hot sleepers – the Amerisleep mattresses are some great examples.

All of the Amerisleep mattresses are designed to sleep cool in a number of ways. They feature bio-based foams that are also open-celled; they are free of those heat-trapping chemicals and the open-celled construction allows for more airflow. The mattresses also feature air channels in their design; this promotes additional airflow through the mattress. Lastly, the Amerisleep mattresses feature a Celliant cover which helps keep the top of the mattress cool.

Amerisleep offers five mattresses with varying firmnesses; they go from the AS1 (firm and better for stomach sleeping) all the way to the AS5 (extremely soft and better for side sleeping). I am personally an enormous fan of the Amerisleep AS4 mattress and found it to be a fantastic match for side sleeping.

People who just love the feeling of memory foam but want to ensure they don’t sleep hot are going to love what they find with the Amerisleep mattresses.

What Makes Amerisleep Stand Out?

  • All of their mattresses are memory foam mattresses with cooling features; people get the soft memory foam experience without overheating at night.
  • Amerisleep offers five mattresses that should work for a variety of different sleepers.
  • The memory foam found in these mattresses is responsive, so sleepers should not complain about getting trapped in the mattress.

Read the full Amerisleep AS4 mattress review 

30% Off
Amerisleep
Amerisleep
Amerisleep

Amerisleep is a perfect choice if you want a memory foam mattress but don't want to sleep cool.  All their mattresses are very comfortable as well.  You can get 30% off Amerisleep mattresses simply by clicking the link below and using code MC30. 

Best Cooling Firm Mattress

Purple

The Purple mattresses are some of the most popular mattresses currently on the market – their popularity comes from their unique, proprietary hyper-elastic gel polymer. The original Purple mattress features 2″ of this material in the comfort layer; it provides both comfort and support.

The hyper-elastic gel polymer forms a gel grid that, at first, feels very firm and supportive. Many people, especially those who are on the lighter side are going to find the Purple to be a firm mattress. 

Once enough pressure is applied to a specific area, just that spot will collapse. This construction makes the Purple ideal for combination sleepers; the gel grid will feel more firm and supportive for back and stomach sleepers and more pressure-relieving for side sleepers.

The other great thing about this gel grid is that it doesn’t sleep hot! Just looking underneath the cover of the Purple, one can see the large air channels created by the gel grid – the material itself shouldn’t trap heat and should also promote a massive amount of airflow through the mattress – the Purple should sleep completely temperature-neutral.

Those who need a firm mattress for multiple sleeping positions and don’t want to overheat should take a look at the Purple mattress.

What Makes Purple Stand Out?

  • It should feel like a firm supportive mattress to lightweight sleepers and some medium-weight sleepers. 
  • It contains a gel grid that is both supportive and pressure-relieving at the same time.
  • The Purple should be a great mattress for combination sleepers and those who switch positions at night.
  • The gel grid promotes airflow through the mattress, creating a temperature-neutral sleeping surface.
  • The hyper-elastic gel polymer is extremely durable; the mattress should be a fantastic long-term investment.

Read the full Purple mattress review

Purple Mattress Deals
Purple
Purple
Purple

Purple is an innovative mattress that is a great fit for all three sleeping positions and doesn't sleep hot.  You can get the best current deal on the Purple mattress simply by clicking the link below.

Best Cooling Latex Mattress

Zenhaven

People who are looking for something organic and eco-friendly should pay attention; the Zenhaven is an all-natural mattress that features four layers of Talalay latex. While Talalay latex is not the most affordable mattress material, it is naturally very breathable; Talalay latex foam isn’t going to trap heat like memory foam is known to do.

It is also a flippable mattress, so sleepers can choose from a soft side and a firm side; both sides are generally supportive, and back and stomach sleepers are going to find one of them to be a good fit. Flipping the mattress, sleepers will be able to hone in on the right amount of firmness.

The Zenhaven mattress is also free of harmful chemicals; this is both eco-friendly and also good for people who only want to sleep on all-natural materials. People who want to sleep clean, clear, and cool will definitely like the Zenhaven.

What Makes The Zenhaven Stand Out?

  • The mattress contains Talalay latex, a material that is naturally breathable and cooling.
  • The Zenhaven is organic, eco-friendly, and a good choice for those who want something all-natural.
  • The mattress is flippable, offering two firmnesses in one mattress.
  • Talalay latex is a particularly durable material; the Zenhaven should be a good long-term investment.

Read the full Zenhaven mattress review 

$100 Off
Zenhaven
Zenhaven
Zenhaven

Zenhaven is an all-natural latex mattress that is innovative and has an excellent match of comfort and support.  Save $100 on Zenhaven by clicking the button below.

Best Cooling Mattress for Side Sleepers

Brooklyn Bedding Aurora

The Aurora mattress comes from Brooklyn Bedding, producer of high-quality, value mattresses; the company owns its own factory, allowing Brooklyn Bedding to sell their mattresses at a very affordable price. The Brooklyn Bedding Aurora is a hybrid mattress that is near the higher end of the company’s set of mattresses.

There is a lot to love about the Aurora, but its cooling features really stand out. First, it features TitanCool in the cover; this is a phase change material that is cool to the touch and actually changes its physical state to help people sleep cooler! The top layer of CopperFlex foam is, as the name suggests, infused with copper; this material is a conductor and will help draw heat away from the body. Add in the airflow-promoting coils, and that is one cool-sleeping mattress!

At 13.5″ tall, the Aurora is a substantial mattress; much of the mattress consists of comfort material, so it should be a good option for side sleepers of many sizes. Also, with its supportive coils, the mattress should work for the majority of back sleepers.

Hot sleepers who are looking for a very comfortable mattress that is a good fit for people of many sizes should love the Brooklyn Bedding Aurora.

What Makes Aurora Stand Out?

  • The mattress contains a number of cooling materials that should keep sleepers from overheating.
  • The Aurora comes from Brooklyn Bedding, so it is a quality mattress sold for a value price.
  • The mattress features a thick comfort layer that should offer pressure relief even to heavier side sleepers.
  • Back sleepers should also find enough support on the Brooklyn Bedding Aurora mattress.

Read the full Aurora mattress review

Get 20% Off
Brooklyn Bedding Aurora
Brooklyn Bedding Aurora
Brooklyn Bedding Aurora

The Brooklyn Bedding Aurora is a luxury mattress that a lot of people will like.  You can get 20% off the Aurora mattress by clicking the link below and using code CLARITY20 at checkout.

Best For Heavyweight Sleepers

Purple Hybrid Premier - Best For Heavy SleepersIf people are heavier and want a cooling mattress, they will want to consider a few additional things.

In particular, they need to make sure the mattress is going to be durable because the mattress will need to be able to handle extra weight over time without sagging or compressing too quickly. Some of the online mattress offerings, for example, are made for people 200 lbs or less.

We think the Purple Hybrid Premier 4″ mattress is a great choice for hot sleepers who are also heavier:

  • The Purple Hybrid Premier 4″ has the same gel material as the original Purple mattress (which we wrote about earlier in this article), which means people get a temperature-neutral sleeping surface.
  • Consumers also get 4″ of the gel material, which means heavier sleepers are unlikely to bottom out and feel any pressure.
  • The spring system is highly supportive, and overall it will be a very durable mattress (even for heavy people).

Best For Side Sleepers

Nolah - Best Cooling For Side SleepersIn addition to seeking out a mattress that can keep consumers cool at night, people will also want to find a mattress that is a good fit for their sleeping position. If they are a side sleeper, then they will want to get a mattress that is a little bit softer- than-average and has a thicker comfort layer.

The Nolah is a great fit for side sleeping for a few reasons:

  • It sleeps temperature-neutral, so people won’t have to worry about overheating at night.
  • The mattress is softer-than-average, and the material in its top layer does an excellent job of relieving pressure. I didn’t feel pressure on the hips and shoulders when I slept on it, and it excelled during our pressure map testing.

I would take a look at the Nolah if people don’t want to overheat and they sleep mainly on their side, so long as they aren’t too heavy.

Best Cooling Memory Foam Mattress

Amerisleep - Best Cooling Memory FoamMemory foam is a very well-liked mattress material because it can be super comfortable, and it relieves pressure extremely well (probably better than just about any other material). As a result, memory foam has become extremely popular, and we are seeing more and more memory foam mattresses hit the market. The biggest complaint people have about memory foam is its propensity to trap heat, but luckily, manufacturers have found many clever ways to address this issue.

We think the Amerisleep AS4 is probably the best memory foam mattress for cooling for a number of reasons:

  • It uses a Celliant cover, which can potentially offer certain health benefits in addition to regulating temperature.
  • The memory foam is open-celled, meaning it is much more breathable than the average memory foam mattress.
  • There are air channels in the second layer that allow for additional airflow throughout the mattress.
  • The memory foam is partially bio-based, which further improves breathability and adds an eco-friendly touch to the construction.

All told, the Amerisleep AS4 is a memory foam mattress that sleeps remarkably cool and is an excellent fit for side and heavier sleepers.

Heavyweight Sleepers – Over 230 lbs

It is always important to consider one’s size and weight when shopping for a mattress; for instance, a mattress that might work for someone of my size (5’9” and 160 lbs) might not be the best option for a larger person. To get the perspective of a larger person, I asked Marten (6’7” and 250 lbs) to offer his take on these mattresses:

I am a larger person and a hot sleeper, and I believe six of these mattresses are going to be a good option for sleepers like me. First off, there are the Helix mattresses; as Joe mentioned, the company will customize a mattress to meet each sleeper’s specific needs. For larger people, they offer the Helix Plus which is very supportive and comfortable; customers can also upgrade to the Luxe version for extra cooling.

The Purple is great because the gel grid allows for massives amounts of airflow; I sleep completely temperature-neutral and the durable, supportive gel grid can definitely handle my weight when I am back and stomach sleeping. In addition, it even gives me great pressure relief while I’m side sleeping!

The Brooklyn Bedding Aurora and Amerisleep AS4 are great mattresses for heavier side sleepers who also sleep hot – they both feature particularly thick comfort layers that fantastic pressure relief for someone of my size – they also contain foams that are made to dissipate heat so that I am not overheating at night.

The Zenhaven is an all-natural mattress that is supportive enough for someone of my size; the latex is supportive enough for me when I am back sleeping and stomach sleeping, and it doesn’t make me sleep hot.

Finally, the Saatva mattress features two sets of steel coils that provide an excellent amount of support; they also promote airflow through the mattress so that I am not sleeping too hot.

Additional Tips For Sleeping Cool

Beyond finding that perfect cooling mattress, there are a few other bedding and mattress products that hot sleepers should be looking for.

Consider The BedJet For Extra Cooling

BedJet LogoThe BedJet is a device that offers climate control for the bed by blowing air directly into the bed; sleepers can control the temperature of this air. That means if people are cold, they can blow hot air into the bed, and if they are warm, they can blow cold air into the bed.

A premium alternative to the BedJet is the WinkBeds coolControl.

Consider A Cooling Mattress Protector, Mattress Pad, or Topper

Mattress ProtectorIf people are worried about sleeping hot, then they might want to consider a mattress protector; most people get them to protect against dust mites, bacteria, and allergens, and they also will keep the mattress clean and protect against spills and stains. At the same time, they can help with cooling!

The Bear mattress protector has a special fabric that can pull heat away from the body and keep people cool at night; even if people sleep on a hot memory foam mattress, this protector can help regulate the temperature.

Other options exist in the form of thin, electric cooling pads that lay across the surface of the mattress; products such as the ChiliPad plug into the wall socket and allow people to choose the exact desired mattress temperature.

A cooling mattress topper can also be a good investment. A mattress topper that includes latex or at least some type of cooling material such as gel or graphite can add some serious cooling to the top of the mattress.

Think About Cooling Sheets.

If people are trying to stay cool at night, they might also want to think about their sheets, which can really affect their sleep temperature.

While thread count usually speaks to the quality of the sheets, higher thread count sheets are usually less breathable than lower thread count sheets. This is because the high thread count sheets are denser and allow less air to pass through.

Consumers should also think about the fabrics used in their sheets because, although synthetic materials are cheaper and thought to be lower quality, they may actually be more breathable. Microfibers leave more room in their weave, which allows for more air to pass through, so people will likely trap less heat when sleeping under synthetic sheets.

That being said, there are natural fibers with cooling properties, such as bamboo sheets, which are durable but also quite breathable.

Does Mattress Firmness Affect Body Temperature?

We have discussed how different mattress designs deal with overheating, but what about mattress firmness? Which is better for hot sleepers: a firmer or softer mattress?

Here are a few general ground rules to keep in mind:

Soft Mattress For Hot Sleepers

  • A softer mattress can mean good pressure relief, but it may also mean trapping more heat; especially with most memory foam mattresses, the more people sink into their mattress, the hotter it can get. It may feel nice to be enveloped by the mattress, but people are also getting more contact with the heat-trapping memory foam – this is not to say that a softer mattress cannot sleep cool, but it is just another factor to consider during the buying process.
  • On a firmer mattress, people are going to sleep more “on” the surface rather than “in” it. Because of this, they will most likely be sleeping cooler on a firmer mattress – they are less surrounded by the mattress, and there is more room for air to flow on their skin.
  • When thinking about mattress temperature, people should also think about their body weight; if they are a heavier person, they will sink into a mattress more than someone who is lighter.

What Kind Of Mattress Cover Should People Get?

When it comes to covers, people may want to consider how they could affect their sleeping temperature. Non-quilted and quilted covers are generally quite different when it comes to their cooling properties. Here are some general ground rules:

  • Non-quilted covers are usually going to be thinner and more breathable because they allow people to interact with the layers of the mattress and shouldn’t interfere with heat dissipation or airflow.
  • Quilted covers consist of cover fabric that is quilted together with another material, most likely foam; while this usually adds extra pressure relief, it can also heat up the sleeping surface even more. It can cut down on breathability and stop cooling foams from doing their job, so if people sleep hot, it may be best to stay away from quilted covers.

What Fabrics Can Help Keep People Cool?

Along with the overall style of the cover, people may also want to consider what fabrics are used in its construction.

Quilted And Non Quilted Cover-87

Many mattresses, mattress protectors, and pillows incorporate different fabrics that are designed to keep people cool. Here are some of the cooling fabrics people may come across:

  • Celliant. This fabric is designed to transform the body heat into infrared energy, and instead of trapping heat, it redirects the energy back toward the body. This may increase muscle recovery and blood flow, and the increased blood flow can help the body regulate temperature better while people sleep. Celliant fabric can be helpful in so many ways.
  • Tencel: Also known as Lyocell, this fabric is made from the wood fibers found in eucalyptus trees. It is designed to be very breathable, which helps prevent the mattress from trapping heat.
  • Lycra: Also known as Spandex, this material is breathable, wicks moisture away from the body, and can be found in some mattress protectors.

How About Phase Change Materials?

Phase Change Mattress MaterialsIn some mattress protectors and pads, people may find something called phase change materials. T

That is how phase change   materials work in bedding, mattress protectors, and mattresses. They change from one state to another as the body temperature changes. They actually pull heat away from the body and store it if people are sleeping hot and, if they get too cold, these materials release the stored heat to warm up the body.

What About Pillows?

If people find that they are waking up in a pool of sweat in the middle of the night, their mattress may very well be the reason. However, people might also want to consider what type of pillow they are sleeping with; their pillow could easily be one of the reasons why they are overheating.

There a few different ways pillow manufacturers can address this issue. From our experience, if people are looking to get a pillow that will keep them cool, they should check out the Bear pillow. It is very cool to the touch, and it is also a very comfortable pillow overall.

How Do Different Mattress Types Perform?

In general, some mattress types are better at regulating temperature than others. Just looking at the basic construction of these types of mattresses, we can see how they either trap or dissipate heat:

Different Mattress Types

  • Innerspring. Innerspring mattresses generally do pretty well with sleeping cool; that’s because the mattresses have space for air to flow between and through the coils. One possible exception to this rule: If there is a lot of foam sitting on top of the coils (such as in a hybrid mattress), this may inhibit airflow and make the mattress sleep less cool.
  • Latex. Latex generally doesn’t have heat issues because of its chemical composition and because it usually has air holes punched in it. Some synthetic latex mattresses can potentially be the exception – mattresses that combine latex with memory or poly-foam might have issues with sleeping hot as well.
  • Memory foam and polyfoam. Foam mattresses are the type that receives the most complaints about sleeping hot. With these types of mattresses, people will want to make sure the company has done something to address this issue, such as creating a more open-celled structure in the foams, having a certain type of fabric in the cover, infusing gel into the foams, or using plant-based foams.
  • Gel memory foam. Memory foam is known to trap heat, so many mattress companies have begun incorporating gel in their memory foam. Gel is meant to dissipate heat, but its effectiveness is not always clear; gel can take on the heat of the foam, and while it may warm more slowly than traditional foam, it may not actively cool people while they sleep.

Note: These are general statements regarding whether or not a mattress will sleep cool. Sleep temperature depends on a lot of different factors, so take these as general guidelines instead of hard-and-fast rules.

Why Do We Sleep Hot In The First Place?

One of the main reasons we sleep hot has to do with how our body acts during REM sleep. When we are in this deep stage of sleep, the temperature-regulating system in our brains is asleep as well; because of this, our bodies usually match the temperature of our bedroom.

When we sleep, we release heat and our mattress, bedding, and pillows trap it. Materials such as memory foam are especially known to trap this heat, and certain types of bedding can prevent airflow. Since our body isn’t regulating our temperature while we are asleep, these materials can cause us to overheat.

In addition to this general explanation for sleeping hot, there are a few specific conditions that might also exacerbate feeling hot while trying to sleep. These include:

  • Health Issues That Cause Sleeping HotAnxiety. People who suffer from anxiety can experience fluctuations in their body heat; during anxious moments, they can experience something akin to hot flashes. If these hot flashes occur at night, they can cause people to wake up or have trouble going back to sleep.
  • Hyperthyroidism. The thyroid gland produces the thyroid hormone, which, among other things, helps to regulate body temperature. With hyperthyroidism, the gland produces too much of the hormone, and this can cause people with the condition to feel overheated.
  • Menopause. Women who are just beginning their menopausal transition can sometimes experience hot flashes. These occur as estrogen levels change and a feeling of intense heat comes on; these hot flashes can cause night sweats.
  • Medications. Some prescription drugs have also been shown to cause night sweats; antidepressants and other psychiatric drugs can lower norepinephrine levels, and this can lead to excessive sweating during the day and night.
  • Other Conditions. There are several other health conditions that may affect body temperature, thereby causing people to sleep hot. For example, Graves’ Disease, Multiple Sclerosis (MS), and some forms of cancer are accompanied by fluctuations in body temperature.

Overall

Hot sleepers shouldn’t have to suffer! If they look at one of these nine mattresses, they should have no trouble finding a mattress to keep them cool at night. Also, make sure to read the individual reviews for more information on these mattresses.

FAQs

Why are you sleeping hot at night?

There are a number of reasons someone might be sleeping hot at night. It could be due to a medical condition such as anxiety or hyperthyroidism.

However, it could also have to do with one’s sleep environment. The temperature of the room and lack of breathability in one’s bedding and mattress can also cause one to overheat.

Does cooling gel really make mattresses sleep cooler?

While gel can keep mattresses from overheating quite so much, they probably don’t work as well as many companies advertise.

Gel memory foam, for instance, might still trap a good deal of heat.

How can you keep your bed cool at night?

There are a few ways someone can keep their bed cool at night. First, they can invest in a cooler sleeping mattress with coils and other heat-dissipating material. Second, they could opt for cooling, breathable sheets or a mattress protector. Lastly, they could spring for the BedJet, a device that blows air into the mattress.

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Joe Auer

Joe Auer is the editor of Mattress Clarity. He mainly focuses on mattress reviews and oversees the content across the site.

He likes things simple and take a straightforward, objective approach to his reviews. Joe has personally tested nearly 250 mattresses and always recommends people do their research before buying a new bed. He has been testing mattresses for over 5 years now, so he knows a thing or two when it comes to mattress selection. He has been cited as an authority in the industry by a number of large publications.

Joe has an undergraduate degree from Wake Forest University and an MBA from Columbia University.

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