How To Cool Your Memory Foam Mattress

How To Cool Your Memory Foam Mattress

 Written By: Michal Szlas - Founder and CEO of Otty Sleep

If you're a hot sleeper, you're likely familiar with the discomfort of waking up in a sweat, especially during those balmy summer nights. Memory foam mattresses, while offering fantastic pressure relief, are notorious for their heat retention properties.

But don't despair! There are effective ways to combat this issue and ensure a cool, comfortable night's sleep.

In this guide, we delve into the science behind memory foam mattresses and why they tend to trap heat. We'll then explore various strategies to keep your mattress cool, from using cooling mattress toppers and pads to investing in breathable sheets and pillows. We'll also share tips on how to maintain a cool body temperature throughout the night, ensuring you wake up refreshed and ready to seize the day.

So, whether you're an existing memory foam mattress user or considering making the switch, this guide is packed with practical advice to help you sleep cooler and improve your overall sleep quality.

Let's dive in!

Why Do Memory Foam Mattresses Retain Heat?

Memory foam, a unique material known for its squishy texture and pressure-relieving properties, has become a popular choice for mattresses. The science behind memory foam lies in its structure, which is filled with tiny air bubbles. When pressure is applied, these bubbles get displaced, allowing the foam to mould to the shape of your body. This characteristic is what makes memory foam mattresses so comfortable.

However, this same property also contributes to the heat retention issue. The dense structure of memory foam doesn't allow much air to flow through, trapping more heat. This is particularly noticeable when you're lying on the mattress, as your body heat gets trapped within the foam, causing the temperature to rise.

The heat retention property of memory foam can be a double-edged sword. On one hand, it can provide a warm and cosy sleeping environment during colder months. On the other hand, it can lead to discomfort and excessive sweating during warmer periods, disrupting your sleep.

Understanding the science behind memory foam mattresses is crucial in finding ways to mitigate the heat buildup. By knowing how memory foam works, you can take steps to regulate your body temperature and ensure a comfortable sleep, regardless of the temperature during the night.

If your memory foam mattress is particularly old or of lower quality, it could be contributing to the heat retention. Older formulations of memory foam were denser and didn't bounce back much, causing them to retain more heat at night by trapping hot air inside.

How to Make a Memory Foam Mattress Sleep Cooler

If you're a fan of memory foam mattresses but struggle with the heat they can trap, don't worry. There are several effective ways to make a memory foam mattress provide a cooler night's sleep.

From investing in cooling sheets, toppers and pillows, and even exploring the world of gel-infused memory foam mattresses, you can transform your sleep experience by adding hypoallergenic materials like cotton, that help to bring your core body temperature down as you sleep. Let's delve into these methods and help you find the perfect solution for a cool, comfortable night's sleep.

Using Cooling Mattress Accessories

Invest in a Cooling Mattress Topper

Typically made from materials like gel-infused memory foam or latex, they can significantly help to make a memory foam mattress cooler. These toppers are designed to dissipate heat, providing a comfortable sleep environment.

Choose a Mattress Pad with Breathable Material

Mattress pads, especially those made from breathable natural fibers can also aid in cooling your mattress. They allow heat to escape, preventing the mattress from retaining warmth.

Consider a Latex Topper

Latex toppers, with their tiny holes, allow for better air circulation, preventing heat from getting trapped inside. This can be a game-changer in achieving a cooler night's sleep.

Opt for a Topper with Conductive Materials

Some synthetic foam toppers are designed with conductive materials like gel or copper. These materials are intended to transfer heat away from the body, helping to keep the mattress surface cool.

The goal is to create a cool and fresh sleeping environment. By using cooling mattress toppers and pads, you can transform your sleep without having to replace your entire mattress.

Invest in Cooling Sheets and Pillows

Investing in breathable sheets and pillows can significantly help make a memory foam mattress sleep cooler. Here are some key points to consider:


Opt for hypoallergenic breathable natural fibres like cotton or linen. These fabrics allow air to circulate, reducing the temperature around your head and neck.

Pillow Type

Consider pillows filled with latex, down alternative, or shredded foam. These tend to sleep cooler than solid memory foam. Some pillows even incorporate cooling technologies like gel or bamboo & charcoal infusions.

Sheet Type

Choose sheets that act as a buffer between you and the mattress. High-quality cotton or linen sheets are generally moisture-wicking, helping to wick away sweat and improve comfort.


Good cooling pillows are typically lightweight and breathable, enhancing the overall cooling effect.

By investing in cooling sheets and pillows, you can significantly enhance the coolness of your memory foam mattress. Remember, a cooler head and neck can lead to a cooler body, making your sleep more comfortable and restful.

Exploring Gel Infused Memory Foam Mattresses

Gel-infused memory foam mattresses are a game-changer for those seeking to make their memory foam mattress sleep cooler. These mattresses incorporate a cooling gel within the foam, which works to dissipate heat.

The gel infusion technology is a significant advancement in the mattress industry, offering a solution to the heat retention problem often associated with traditional memory foam mattresses.

The gel particles in the mattress absorb the body heat and distribute it evenly, preventing the heat from being trapped. This results in a cooler and more comfortable sleep experience.

Moreover, some gel-infused memory foam mattresses come with covers made from cool fabric or breathable material like cotton, which further enhances the cooling effect.

Consider Hybrid Memory Foam Mattresses

Hybrid memory foam mattresses will still usually offer the sleep benefits of memory foam but will often take away the negatives - heat retention - due to a mixture of other materials. 

We particularly recommend encapsulated pocket springs and memory foam combinations - the base of all OTTY mattresses, which will provide excellent support due to the long springs, comfort and that mould-to-your-body feeling from memory foam, but due to springs having plenty of air circulation, the combination helps to massively reduce heat retention and therefore, keeping you cooler at night. 

Other Ways to Keep Cool While Sleeping

In our quest for a good night's sleep, we often overlook the importance of maintaining a proper bedroom temperature. This section will explore various strategies to help you sleep cooler and improve your overall sleep quality. From adjusting your sleep environment to choosing the right sleepwear, these tips are designed to enhance your sleep health and provide a more comfortable night's rest.

In the realm of holistic sleep wellness, understanding how to regulate your body temperature can make a significant difference, especially if you're a hot sleeper. So, let's dive in and explore these cool sleep strategies.

Adjusting Your Sleep Environment

Improve Airflow: Keep a window open or invest in a small circulating fan to maintain good airflow in your bedroom. Consider a bed foundation or a slatted bed frame design to enhance airflow around your mattress.

Light Control: Turn off bedside lamps, overhead lights, and other electronics well before bedtime. These devices generate heat when turned on, and switching them off can help reduce room temperature.

Air Conditioning: Use air conditioning on hot nights. While it can be costly, the benefit to your sleep quality may be worth the expense. Aim for a bedroom temperature around 15 degrees.

Bedding Material: Opt for breathable, natural fibres like cotton, linen, silk, or bamboo for your bedding. These materials promote cooler temperatures and assist with your body's natural temperature regulation process at night.

Choosing the Right Sleepwear

Choosing the right sleepwear can significantly influence your sleep temperature. It's not just about what feels comfortable, but also what helps maintain a lower temperature throughout the night. Breathable, lightweight materials such as cotton or thin wool are ideal choices. These fabrics allow air to circulate, preventing heat from being trapped against your skin.

For some, the ultimate cool-down strategy might be sleeping in just their underwear. This minimal approach allows maximum skin exposure, promoting heat dissipation. However, it's essential to ensure your underwear is also made from breathable materials to avoid discomfort.

Remember, the goal is to enhance your sleep quality by maintaining the optimal temperature. So, choose your sleepwear wisely. It's not just about fashion or comfort, but also about sleep health. As a hot sleeper, the right sleepwear can make a world of difference.

In the realm of bedtime hygiene, the knowledge of sleep health extends to every aspect of your sleep environment, including your sleepwear. So, don't underestimate the power of the right pyjamas in your quest for quality sleep.

The Role of Hydration in Sleep Temperature

Hydration plays a pivotal role in maintaining a cool temperature during sleep. It's a key factor that often gets overlooked in the quest for quality sleep. As a hot sleeper, you might find that your body tends to heat up during the night, disrupting your sleep cycle. This is where hydration comes into play.

Drinking plenty of water throughout the day can help regulate your body temperature, keeping you cooler during the night. However, it's important to avoid drinking large amounts of water right before bed. This could lead to frequent wake-ups for bathroom trips, disrupting your sleep.

The goal is to achieve a balance. Too much hydration can lead to night sweats, while too little can leave you feeling parched and hot. So, it's all about finding the right amount of hydration that works for you.

Can Your Bed Base Make a Memory Foam Mattress Cooler?

Choosing the right bed base for your mattress is a crucial step towards achieving a cooler and more comfortable sleep. The bed base plays a significant role in regulating the temperature of your sleep surface, especially when using memory foam mattresses known for their heat-retaining properties.

A well-chosen bed base can enhance airflow, helping to dissipate the heat and moisture that memory foam tends to trap. This section will guide you through the importance of a breathable bed base and the materials to consider for your bed base.

The Importance of a Breathable Bed Frame

The bed base you choose for your memory foam mattress can significantly impact the overall temperature of your sleep surface. A breathable bed frame is crucial for maintaining a cool and comfortable sleeping environment.

The reason behind this is simple. A bed base with ample space underneath allows for better airflow. This increased circulation helps to dissipate heat and moisture that can get trapped within the mattress.

This is particularly important for memory foam mattresses.

By opting for a bed base that promotes airflow, you can mitigate this issue. The result is a cooler, more comfortable night's sleep.

So, when choosing a bed base for your memory foam mattress, consider its breathability.

Materials to Consider for Your Bed Base

When it comes to choosing materials for your bed base, there are a few key options to consider:

Wooden Slats: These are a great choice for memory foam mattresses. They provide ample space for air to circulate, helping to dissipate heat and moisture. Plus, they're sturdy and durable.

Metal Frames: While not as breathable as wooden slats, metal frames can still offer decent airflow. They're also robust and long-lasting.

The material of your bed base can significantly impact the temperature of your memory foam mattress. So, choose wisely to ensure a cool and comfortable night's sleep.

Why Hybrid Memory Foam Mattresses Are Good For Staying Cool

Hybrid mattresses, which combine the supportive pocket springs with the contouring comfort of memory foam, are an ideal choice for those who overheat at night.

The addition of springs enhances airflow, promoting better ventilation and preventing heat buildup, while the memory foam layer provides pressure relief and comfort.

This combination, which is the base of all OTTY mattresses ensures that you enjoy the cooling benefits of increased air circulation without sacrificing the supportive and body-conforming properties of memory foam. As a result, hybrid mattresses offer a balanced sleep environment that helps regulate temperature, keeping you cool and comfortable throughout the night.


Final Thoughts on Cooling Your Memory Foam Mattress

In conclusion, memory foam mattresses, while offering superior comfort and pressure relief, can often trap body heat, disrupting your sleep quality.

However, with the right strategies and accessories, you can significantly improve the temperature regulation of your bed. Investing in breathable materials like cotton, linen, or bamboo for your bedding and sleepwear, using cooling mattress toppers or pads, and considering mattresses with gel infusions or other cooling technologies can all contribute to a cooler sleep environment.

Remember, achieving optimal sleep health is about more than just comfort; it's about creating the right conditions for your body to rest and rejuvenate. So, don't let a hot sleeper situation compromise your sleep wellness. With the right knowledge and tools, you can enjoy the benefits of memory foam without the heat retention.

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