Finding the best king memory foam mattress that stays cool through the night can be challenging, especially with so many options claiming to offer superior cooling. The Novilla King Size Mattress stands out as the overall best choice for its reliable cooling gel infusion and pressure relief. For those on a budget, the Sweetnight CoolNest offers excellent cooling performance with multi-zone support at a more accessible price point. Meanwhile, the Novilla 14 Inch King Mattress provides extra breathability thanks to its cool-touch nylon cover and gel-infused foam. Keep in mind, tradeoffs between firmness, price, and cooling technology mean you might have to prioritize what matters most for your sleep. Continue reading for the full breakdown of these top picks and what sets them apart.
Key Takeaways
- Gel-infused memory foam significantly enhances cooling, but not all products use the same infusion quality or amount.
- Bigger thickness (14 inches) can improve pressure relief but may retain more heat if not well-ventilated.
- CertiPUR-US certification ensures safety and lower off-gassing, a key consideration for sensitive sleepers.
- Additional features like cool-touch covers or cooling pillows can boost overall sleep temperature control.
- Price varies widely, with premium models offering advanced cooling but at a premium cost; budget options can still provide decent cooling performance.
More Details on Our Top Picks
Novilla King Size Mattress, 12 inch King Mattress in a Box, Gel Memory Foam Mattresses for Cooling Night Sleep, Comfort Support and Pressure Relief, CertiPUR-US Certified
This Novilla 12-inch king mattress stands out for its innovative use of NanoGel infusion, increasing heat absorption and airflow to combat hot sleepers, making it a top choice for those seeking reliable cooling. Compared to the Cool Gel Chill 14-Inch mattress, Novilla offers enhanced breathability through its NanoGel technology, which helps maintain a cooler sleep environment. Its layered foam design provides excellent pressure relief and spinal support, making it suitable for side sleepers who need comfort without sacrificing support. A notable tradeoff is that its gel infusion might be less effective in extremely humid environments, and some users report a slight initial odor. Still, the 10-year warranty and CertiPUR-US certification underscore its safety and durability. This mattress makes the most sense for hot sleepers who prioritize cooling but also want balanced support and longevity.
Pros:- 30% more NanoGel infusion for superior cooling
- Multi-layer foam for pressure relief and spinal alignment
- CertiPUR-US and OEKO-TEX certified for safety and health
Cons:- Initial off-gassing odor that requires airing out
- May be less effective in very humid environments
Best for: Hot sleepers who want a supportive, cooling mattress with long-term durability
Not ideal for: Budget-conscious buyers seeking a very low-cost option or those in humid climates where NanoGel may be less effective
- Firmness:Medium
- Number of Layers:3
- Materials & Construction:Gel memory foam, comfort foam, support foam
- Certifications:CertiPUR-US, OEKO-TEX
- Size:King
- Item Dimensions:80 x 76 x 14 inches
Bottom line: This pick suits hot sleepers who desire a well-supported, cooling mattress with a decade-long warranty.
Cool Gel Chill 14 Inch Medium Firm Memory Foam Mattress King Size, with 2 Bonus Cool Gel Memory Foam Bed Pillows, 14″ with Pressure Relief, CertiPUR-US Certified, Cooling King Mattress in a Box
Compared with the Novilla model, the Cool Gel Chill 14-Inch mattress provides a slightly thicker gel layer and includes two bonus pillows, offering extra comfort and value. Its ventilated, open-cell design enhances airflow, effectively reducing heat buildup, which makes it ideal for hot sleepers on a budget. The medium-firm feel strikes a good balance for a variety of sleep positions, especially back and combination sleepers. Some tradeoffs include a less plush feel that might not suit those preferring softer mattresses, and the large size can be cumbersome to move or set up. Nonetheless, its affordability paired with CertiPUR-US certification and included pillows makes it a compelling choice for budget-conscious shoppers seeking cooling without sacrificing safety or support.
Pros:- Affordable price point with bonus pillows included
- Ventilated open-cell foam for enhanced breathability
- CertiPUR-US certified, fiberglass-free materials
Cons:- Less plush feel, may not suit softer mattress lovers
- Bulky size complicates handling and setup
Best for: Budget-minded individuals seeking a cooling, medium-firm king mattress with bonus pillows
Not ideal for: Those preferring plush or ultra-soft mattresses or with limited space for a bulky package
- Firmness:Medium
- Layer Thickness:3.5 inches gel foam
- Materials & Construction:Ventilated gel memory foam, high-density base foam
- Certifications:CertiPUR-US
- Size:King
- Item Dimensions:80 x 76 x 14 inches
Bottom line: Ideal for budget-conscious buyers wanting effective cooling and support with added value through bonus pillows.
Novilla 14 Inch King Size Mattress, Gel-Infused Bliss Cooling King Memory Foam Mattress in a Box with Cool-Touch Nylon Cover, Pain Relief & Spinal Support with CertiPUR-US Certified Foam
This Novilla 14-inch model emphasizes cooling with its gel-infused foam and cool-touch nylon cover, making it suitable for those who need both temperature regulation and spinal support. It offers a more substantial support system compared to the 12-inch Novilla, with a triple-layer foam that targets pressure points and promotes proper alignment—ideal for back sleepers or those with back pain. Its Cool-Touch nylon cover enhances the cooling effect, comparable to the Cool Gel Chill mattress but with more focus on spinal health. A tradeoff is that its thicker profile may be less suitable for low-profile bed frames, and some users note that it takes longer to fully expand. Still, for those seeking a safe, durable, and supportive cooling mattress, it’s a solid choice that balances comfort with health benefits.
Pros:- Enhanced support and pressure relief with triple-layer foam
- Cool-touch nylon cover for immediate cooling sensation
- CertiPUR-US and OEKO-TEX certified for safety
Cons:- Thicker profile may not fit all bed frames
- Longer expansion time after unboxing
Best for: Back sleepers or those with back pain looking for enhanced spinal support and cooling
Not ideal for: Shoppers preferring a softer, more plush mattress or with minimal space for thicker models
- Firmness:Medium
- Number of Layers:3
- Materials & Construction:Gel-infused foam, support foam, comfort foam
- Certifications:CertiPUR-US, OEKO-TEX
- Size:King
- Item Dimensions:80 x 76 x 14 inches
Bottom line: Best suited for sleepers requiring targeted spinal support combined with cooling technology.
Sweetnight CoolNest 14 Inch King Size Mattress, Cooling King Memory Foam Mattress for Cool Night Sleep, 5-Zone Ergo Support for Pressure Relief, Medium, CertiPUR-US Certified
Compared with Novilla’s offerings, the Sweetnight CoolNest focuses heavily on zoned support with its 5-zone design, which helps target pressure points and spine alignment while providing effective cooling through PCMflux foam and ventilated cover. Its 3D-woven fabric enhances breathability, rivaling Novilla’s gel infusion but with an added emphasis on airflow and moisture-wicking. It also excels at minimizing motion transfer, making it ideal for couples with different sleep patterns. However, some users find the medium firmness slightly less plush and prefer softer mattresses, and the larger size can be unwieldy for some setups. Overall, the Sweetnight provides a balanced combination of cooling, support, and motion isolation, especially appealing for active or restless sleepers.
Pros:- 5-zone design for targeted support and pressure relief
- PCMflux foam and ventilated cover for superior breathability
- Excellent motion isolation for undisturbed sleep
Cons:- Medium firmness may feel less plush for some
- Size can be difficult to maneuver into tight spaces
Best for: Couples or restless sleepers needing zoned support and motion isolation with cooling benefits
Not ideal for: Those seeking a very plush or soft mattress or with limited bedroom space
- Firmness:Medium
- Layers:6
- Materials & Construction:Gel memory foam, high-density foam, ventilated cover
- Certifications:CertiPUR-US, OEKO-TEX
- Size:King
- Item Dimensions:80 x 76 x 14 inches
Bottom line: Ideal for couples or active sleepers who want zoned support, minimal motion transfer, and cooling comfort.
EGOHOME King Size Memory Foam Mattress, 12 Inch Bed Mattress in a Box with Cooling Green Tea Gel, Relieve Pressure with Medium Firm Support, CertiPUR-US Certified, 80”L x 76”W, White
Compared to the more feature-rich Novilla and Sweetnight mattresses, EGOHOME’s 12-inch bed emphasizes budget-friendly support and cooling with its green tea gel infusion, which provides a refreshing sensation and helps regulate temperature. Its medium-firm feel offers reliable support suitable for a variety of sleepers, especially those who want a straightforward, in-budget solution. While it doesn’t feature advanced zoned support or high-tech cooling layers like the others, it still provides decent breathability and pressure relief through its gel-infused foam. Some users note that its delivery packaging is less refined and that it may have a slight chemical smell initially. Despite this, it’s a solid, affordable choice for those seeking basic cooling and support without extras.
Pros:- Affordable price point with cooling gel infusion
- Medium firmness suitable for multiple sleeping positions
- CertiPUR-US certified for safety
Cons:- Lacks zoned support and advanced cooling features
- Initial chemical smell requiring airing out
Best for: Budget-conscious buyers needing a supportive, cooling mattress for general use
Not ideal for: People seeking advanced zoned support or plush comfort in a premium mattress
- Firmness:Medium
- Layer Thickness:12 inches
- Materials & Construction:Green tea gel-infused foam, support foam
- Certifications:CertiPUR-US
- Size:King
- Item Dimensions:80 x 76 x 12 inches
Bottom line: A cost-effective mattress providing reliable support and cooling for budget-focused sleepers.
EGOHOME 14 Inch King Size Memory Foam Mattress for Back Pain, Cooling Copper Gel Bed in a Box, Foam Made in USA, CertiPUR-US Certified, Therapeutic Medium Firm, 76x80x14 Black
This model stands out for its innovative cooling fabric combined with graphene technology, which effectively helps regulate body temperature during sleep — a feature that surpasses the cooling capabilities of the Cool Gel Chill 14 Inch Mattress. Compared with other options like Novilla’s gel-infused models, the EGOHOME’s copper gel aerofuion layer offers enhanced moisture control and odor reduction, making it ideal for hot sleepers concerned about hygiene. However, the thicker 14-inch profile may feel bulkier for those with limited space or who prefer a lighter mattress. The CertiPUR-US certification and U.S.-made foam emphasize safety and durability, but the absence of a trial period means buyers should be confident in their choice. This mattress is perfect for those seeking a cooling, health-conscious sleep surface with strong support, especially for back pain relief. It provides a high-density base foam for support and a breathable cover that helps dissipate heat effectively.
Pros:- Effective cooling fabric combined with graphene technology for temperature regulation
- High-density support foam provides excellent spinal support
- CertiPUR-US certified, made in the USA, emphasizing safety and durability
- Copper gel aerofuion layer reduces moisture and odor
Cons:- Thicker profile may be less suitable for those with limited space or who prefer a lighter mattress
- No trial period included, which could be a risk for uncertain buyers
Best for: Hot sleepers who need a highly breathable, temperature-regulating mattress with safety certifications.
Not ideal for: Shoppers seeking a lightweight or easily movable mattress, or those wanting a trial period for testing comfort before purchase.
- Size:76 x 80 inches
- Thickness:14 inches
- Material:Copper gel aerofuion memory foam, MLILY Adaptifoam
- Certifications:CertiPUR-US, ICA endorsement
- Made in:USA
- Cooling features:Cooling fabric, graphene technology
Bottom line: This mattress is ideal for hot sleepers seeking advanced cooling features and strong support, but it may be less appealing for those who prioritize lightweight options or trial periods.
How We Picked
These mattresses were evaluated based on cooling performance, support, build quality, and value. I prioritized products with proven cooling technologies such as gel infusion, breathable covers, and multi-layer designs that promote airflow. Durability and CertiPUR-US certification were essential for safety and long-term performance. The ranking reflects a balance between affordability and advanced cooling features, ensuring options for different budgets and preferences. Each product was assessed for ease of setup, pressure relief, and overall sleep comfort, helping buyers find the best fit for their cooling needs in a king size format.Factors to Consider When Choosing Best King Memory Foam Mattress Cooling
Choosing the right king memory foam mattress with cooling features involves more than just looking at the top layer. It’s important to consider how the foam construction affects airflow and heat dissipation, as well as additional features that enhance cooling. Support and firmness levels should match your sleep position and preference, ensuring comfort without trapping heat. Price and certification also matter, especially if you’re sensitive to chemicals or want long-term durability. By understanding these factors, you can make a more informed decision tailored to your sleep environment and budget.Cooling Technology and Materials
Look for memory foam mattresses that incorporate cooling technologies like gel infusions, phase change materials, or open-cell designs. Gel-infused foams help absorb and dissipate heat, but the effectiveness depends on the infusion quality and amount used. Phase change materials actively absorb heat, providing a more dynamic cooling effect. Open-cell constructions promote better airflow within the foam, preventing heat buildup. Choosing the right combination of these features can significantly impact your sleep temperature and overall comfort.
Support and Firmness
Support level is critical for spinal alignment and pressure relief, especially in king size beds where movement can be more pronounced. Medium-firm options typically suit most sleep positions, providing a good balance between softness and support. However, firmer foams may trap more heat, while softer options might not offer enough support for back sleepers. Consider your preferred sleep position and any existing pain issues when selecting firmness, as it influences both cooling and comfort.
Breathability and Cover Materials
The mattress cover plays a crucial role in cooling. Covers made from breathable, moisture-wicking fabrics like cooling nylon or Tencel help regulate temperature and reduce sweat buildup. Avoid covers that trap heat or are made from non-breathable materials, as they can negate the cooling benefits of the foam core. Removable and washable covers also make maintenance easier, helping keep the surface fresh and cool over time.
Price and Certifications
Higher-priced mattresses often incorporate advanced cooling features and are built with higher-quality materials, but budget-friendly options can also perform well if they include key cooling elements. Certifications like CertiPUR-US guarantee the foam is free from harmful chemicals, adding peace of mind and often correlating with better overall quality. Always weigh the cost against features, longevity, and safety to find a mattress that offers good value for your investment.
Additional Features and Accessories
Features like cooling pillows, mattress toppers, or adjustable bases can complement your mattress’s cooling capabilities. Some mattresses come with extra components like bonus pillows or cooling gels that enhance temperature regulation. These accessories can be especially helpful if you tend to sleep hot or live in a warmer climate. Think about how these extras fit into your overall sleep setup and whether they add value for your specific needs.
Frequently Asked Questions
Will a memory foam mattress really keep me cool all night?
Memory foam mattresses with cooling technologies like gel infusions, breathable covers, and open-cell structures are designed to reduce heat retention. However, individual sleep temperatures vary, and factors like room temperature, bedding, and sleep position influence how cool you feel. While some models excel at dissipating heat, others may still trap warmth if not paired with additional cooling accessories or proper ventilation. It’s important to select a mattress with proven cooling features and consider your environment for the best results.
Are cooling mattresses more expensive than regular memory foam beds?
Typically, mattresses with advanced cooling features do come at a higher price point due to the specialized materials and technology involved. However, there are budget-friendly options that incorporate effective cooling elements without the premium cost, making them accessible for more buyers. When evaluating costs, consider the long-term value—if a cooler night’s sleep reduces the need for additional cooling accessories or improves your overall rest, spending a bit more might be justified.
How long do cooling features last in a memory foam mattress?
The durability of cooling features depends on the quality of materials and construction. Gel infusions and phase change materials tend to maintain their effectiveness for several years if the mattress is well-made and properly maintained. However, over time, the cooling properties can diminish as the foam ages or if the mattress is exposed to excessive heat or moisture. Choosing a mattress with high-quality, certified materials can help ensure the cooling benefits last longer.
Can I add a cooling topper to my existing mattress?
Yes, adding a cooling topper can significantly enhance the temperature regulation of your current mattress. Toppers made from gel-infused memory foam, latex, or breathable materials can provide an extra layer of cooling and pressure relief. They are a flexible and often more affordable way to improve comfort without replacing your entire mattress. Just be sure to select a topper compatible with your mattress size and that complements its cooling features for the best results.
Is a thicker mattress always cooler?
Not necessarily. While a thicker mattress can offer more support and pressure relief, it doesn’t automatically mean it will stay cooler. Thicker mattresses may trap more heat if they lack proper airflow channels or cooling technologies. Conversely, well-designed thicker mattresses with open-cell foam, gel infusions, and ventilated covers can dissipate heat effectively. The key is the quality of materials and construction, not just thickness alone.
Conclusion
For most buyers, the Novilla King Size Mattress offers the best balance of cooling, support, and value, making it the ideal choice for general use. If budget is a concern, the Sweetnight CoolNest provides effective cooling without breaking the bank, best suited for those new to memory foam or with light sleep needs. For those seeking a premium experience, the Novilla 14 Inch Gel-Infused Mattress delivers enhanced breathability and durability. Beginners or those sensitive to chemicals may prefer models with CertiPUR-US certification and straightforward features, while back sleepers with chronic pain might prioritize the support and pressure relief of the EGOHOME Copper Gel Mattress. Each of these picks caters to different priorities, ensuring you find the right cooling solution for your king-sized sleep setup.
