Best Cooling King Size Mattress: Top Picks for a Sweat-Free Sleep

Verified by: Neil Stanley

Last Updated: 06 Jul 2024

touching mattress

Are you tired of waking up drenched in sweat and tossing and turning all night? 

The search for the best cooling king-size mattress can be a game-changer for hot sleepers or those suffering from night sweats. 

Imagine sinking into a bed that offers supreme comfort and actively works to keep you cool throughout the night, providing a haven of relaxation and relief. 

This guide will explore top-rated cooling mattresses that provide rest and sweat-free sleep, promising a more comfortable and rejuvenating sleep experience.

We'll delve into the features of highly recommended models like the Tempur Breeze Medium-Hybrid, SONU Sleep, and Sweet Night Radiant Gel Memory Foam Mattress. 

Whether you're looking for innovative cooling technologies, superior support, or exceptional comfort, we've got you covered. 

Stay with us as we guide you through choosing the perfect mattress to suit your needs and transform your sleep experience, ensuring you feel informed and guided in your decision.

Top Picks for the Best Cooling King-Size Mattresses

1. Tempur Breeze Medium-Hybrid

tempur mattress

Overview and Key Features 

The Tempur Breeze Medium-Hybrid mattress utilizes Pure Cool® and Pure Cool® Plus materials to pull heat away from the body, maintaining an optimal sleep temperature. 

It features a SmartClimate® cover that is cool to the touch and a heat-diffusing layer for enhanced cooling. 

The mattress combines TEMPUR-Material™ for pressure relief and over 1,000 premium innerspring coils for additional support.

Pros and Cons


  • Advanced cooling technology

  • Excellent pressure relief

  • High customer satisfaction ratings


  • Higher price point

  • Heavy and difficult to move

2. SONU Sleep

sonu sleep mattress

Overview and Key Features 

The SONU Sleep mattress offers a unique design with a patented system that allows deeper arm and shoulder immersion, ideal for side sleepers. It uses advanced cooling materials to regulate temperature. 

These materials contribute to a cool and comfortable sleep surface.

Pros and Cons


  • Innovative design for side sleepers

  • Effective cooling technology

  • Excellent support and comfort


  • It may be unconventional for some users

  • Limited availability

3. Sweet Night Radiant Gel Memory Foam Mattress

sweet night mattress

Overview and Key Features 

The Sweet Night Radiant Gel Memory Foam Mattress is infused with cooling gel to regulate temperature. It features multiple layers of foam, including a gel-infused memory foam layer. 

This layer contributes to the mattress's Cooling properties and a comfortable sleep environment.

Pros and Cons


  • Affordable price

  • Effective cooling gel infusion

  • Adjustable firmness levels


  • It may have an initial off-gassing odor

  • Less durable compared to higher-end models

Why Choose a Cooling King Size Mattress? 

Benefits of Cooling Mattresses 

Cooling mattresses are not just a marketing gimmick. 

They are designed to regulate temperature and wick away heat, ensuring a comfortable sleep environment. 

They help prevent overheating, significantly improving sleep quality for hot sleepers and those experiencing night sweats. 

Rest assured, investing in a cooling mattress is a step towards a more comfortable and restful sleep, giving you confidence in your purchase decision.

Why Size Matters: King Size for Ultimate Comfort

A king-size mattress offers ample space for couples, allowing for a more restful sleep without disturbances. It also provides extra room for individuals who enjoy spreading out while sleeping.

Key Features to Look for in a Cooling King-Size Mattress 

Material and Construction

The materials and construction of a mattress play a crucial role in its cooling capabilities and overall comfort.

Memory Foam 

Memory foam mattresses conform to the body's shape, providing excellent support and pressure relief. Look for gel-infused memory foam to enhance cooling properties.


Latex mattresses are naturally breathable and hypoallergenic, offering a cool and comfortable sleep surface.


Hybrid mattresses combine memory foam or latex with innerspring coils, providing the benefits of both materials. They offer superior support, durability, and enhanced airflow for cooling.

Cooling Technologies 

Different cooling technologies can significantly impact the effectiveness of a cooling mattress.

Gel-Infused Foam 

Gel-infused foam is a type of memory foam infused with cooling gel particles. This technology enhances the mattress's cooling properties and contributes to a comfortable sleep environment.

Breathable Covers 

Mattresses with breathable covers enhance airflow, further contributing to a cooler sleep environment.

Phase Change Materials 

Phase change materials (PCMs) absorb and release heat to maintain an optimal sleeping temperature. In a cooling mattress, PCMs contribute to a comfortable sleep environment.

Firmness and Support 

Choosing the right firmness level is essential for comfort and spinal alignment. A mattress should provide adequate support based on your sleeping position and preference.

Durability and Warranty 

Invest in a durable mattress with a comprehensive warranty to ensure long-term satisfaction.

How to Choose the Right Cooling Mattress for Your Needs 

Assessing Your Sleeping Preferences 

Determine your sleeping position and personal comfort preferences to select a mattress with the right support and firmness level.

Budget Considerations 

Set a budget and compare different models within your price range to find the best value without compromising quality.

Reading Customer Reviews and Ratings 

Research customer reviews and ratings to gather insights into the performance and durability of the mattress you are considering.

Maintenance Tips for Your Cooling King-Size Mattress

Regular Cleaning and Care

Follow the manufacturer's instructions for cleaning and maintaining your mattress to ensure its longevity and performance.

Rotating and Flipping the Mattress 

Rotate your mattress regularly to prevent uneven wear and extend its lifespan. Flipping the mattress is unnecessary for most modern mattresses, but it can help distribute the weight more evenly.

Protecting Your Mattress 

Use a mattress protector to safeguard against spills, stains, and allergens.

Frequently Asked Questions

How do cooling mattresses work? 

Cooling mattresses use various technologies, such as gel-infused foam, breathable covers, and phase-change materials, to regulate temperature and wick away heat. 

For instance, the gel-infused foam, the breathable covers, and the phase-change materials.

Are cooling mattresses worth the investment? 

Cooling mattresses can significantly improve sleep quality and comfort for hot sleepers and those experiencing night sweats, making them a worthwhile investment.

Can cooling mattresses help with night sweats? 

Yes, cooling mattresses are designed to wick away moisture and regulate temperature, helping to alleviate night sweats and ensure a comfortable sleep.


Final Thoughts on Choosing the Best Cooling King-Size Mattress 

Selecting the best cooling king-size mattress involves considering various factors such as cooling technology, support, and durability.

Focusing on your specific needs and preferences can help you find a mattress that enhances your sleep quality and overall well-being. 

Explore the options we've highlighted to discover the perfect cooling mattress that suits your lifestyle and sleep requirements.

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