Cooling Memory Foam King Mattresses

Explore Cooling Memory Foam King Mattresses at Mattress Firm to find a king-size mattress that aligns with your sleep preferences, bedroom space and budget. Browse available options, compare details and choose the right fit for your home.

Beautyrest Black Series Three 15" Firm Mattress

2312

Starting at

$4199⁰⁰

$4799⁰⁰

$600 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Nectar Premier 13" Medium Memory Foam Mattress

580

Starting at

$1099⁰⁰

$1799⁰⁰

$700 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Black Hybrid Series One 12.5" Firm Mattress

106

Starting at

$2499⁰⁰

$2899⁰⁰

$400 OFF

Firm Comfort,

Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Series Two 14.25" Firm Mattress

365

Starting at

$3499⁰⁰

$3899⁰⁰

$400 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Nectar Luxe 14" Medium Memory Foam Mattress

240

Starting at

$1649⁰⁰

$2249⁰⁰

$600 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Black Series Three 15.25" Medium Mattress

2385

Starting at

$4199⁰⁰

$4799⁰⁰

$600 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Nectar Premier 13" Medium Hybrid Mattress

116

Starting at

$1399⁰⁰

$2099⁰⁰

$700 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Black Hybrid Series Four 16" Firm Apex Top Mattress

Starting at

$5899⁰⁰

$6599⁰⁰

$700 OFF

Firm Comfort,

Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Dreamcloud Premier Hybrid Mattress

Starting at

$1299⁰⁰

$2997⁵⁰

$1699 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Beautyrest Black Hybrid Series Two 14.5" Medium Apex Top Mattress

Starting at

$3999⁰⁰

$4399⁰⁰

$400 OFF

Medium Comfort,

Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Stearns & Foster Legacy Hybrid Soft II Mattress

Starting at

$4399⁰⁰

$4999⁰⁰

$600 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Toss and Turn
Bed Partner

$300 Instant Gift⁴ with purchase of a mattress set.

Beautyrest Silver BRS900-C 14.5" Medium Mattress

814

Starting at

$1999⁹⁹

Medium Comfort, best for

Back, Side, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Nectar Luxe 14" Firm Hybrid Mattress

Starting at

$1899⁰⁰

$2549⁰⁰

$650 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Black Hybrid Series Two 13.5" Plush Mattress

Starting at

$3699⁰⁰

$4099⁰⁰

$400 OFF

Plush Comfort,

Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Black Hybrid Series Three 15" Medium Mattress

164

Starting at

$4599⁰⁰

$5199⁰⁰

$600 OFF

Medium Comfort,

Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Tulo Copper Memory Foam 6" Firm Mattress

Starting at

$899⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature

Beautyrest Black Series Two 15.5" Medium Mattress

535

Starting at

$3499⁰⁰

$3899⁰⁰

$400 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Sealy Posturepedic Elite Brenham II 15" Medium Mattress

551

Starting at

$2499⁰⁰

$2599⁰⁰

$100 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Bed Partner
Toss and Turn

$200 Instant Gift⁴ with purchase of a mattress set.

Nectar Classic 12" Firm Hybrid Mattress

114

Starting at

$1049⁰⁰

$1499⁰⁰

$450 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Stearns & Foster Estate Firm Pillow Top II Mattress

Starting at

$3099⁰⁰

$3299⁰⁰

$200 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature

$300 Instant Gift⁴ with purchase of a mattress set.

Dreamcloud Classic Hybrid Mattress

Starting at

$899⁰⁰

$2247⁵⁰

$1349 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Dreamcloud PressureSmart Technology Firm Mattress

1056

Starting at

$1399⁰⁰

$2049⁰⁰

$650 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's By Sealy Memory Foam Plush Mattress

2845

Starting at

$999⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Lux Estate 16" Medium Euro Pillow Top Mattress

1832

Starting at

$4099⁰⁰

$4499⁰⁰

$400 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Tulo Copper 10" Medium Hybrid Mattress

Starting at

$999⁹⁹

Medium Comfort, best for

Side, Back, Stomach Sleepers
Pain
Temperature

Stearns & Foster Reserve Medium Pillow Top II Mattress

Starting at

$5799⁰⁰

$6599⁰⁰

$800 OFF

Medium Comfort, best for

Back, Side, Stomach Sleepers
Pain
Temperature
Allergies
Toss and Turn
Bed Partner

$300 Instant Gift⁴ with purchase of a mattress set.

Cooling memory foam king mattresses combine the contouring comfort of memory foam with materials designed to help manage heat during the night. A king mattress offers a generous sleep surface for couples, growing families who share occasional bedtime cuddles and sleepers who like extra room to stretch out. Memory foam gently responds to your body, allowing the surface to cushion areas such as the shoulders, hips and lower back while helping reduce the feeling of pressure that can come with a firmer sleep surface. Because foam absorbs movement, it can also help limit the transfer of motion when one person changes positions, gets out of bed or settles in after a late night. Cooling features are designed to address the warmth some sleepers associate with traditional memory foam. Gel infusions can help draw heat away from the body, while open-cell foam structures are made to encourage airflow through the comfort layers. Some mattresses use ventilated foam, breathable covers or phase-change materials that absorb and release heat as your body temperature changes. Others combine memory foam with individually wrapped coils to create a hybrid design with more space for air to circulate beneath the surface. These features can be especially appealing as the weather warms, for people who naturally sleep hot or for couples with different comfort preferences. Cooling construction does not mean every mattress will feel cold throughout the night, and the overall experience can vary with the room temperature, bedding, sleepwear and the sleeper’s own body heat. For a broader selection of temperature-conscious designs, explore Cooling Memory Foam mattresses in a range of feels and profiles

Choosing the right cooling memory foam king mattress starts with the way you sleep. Side sleepers often appreciate a softer or medium feel that allows the shoulders and hips to sink in enough to support a more natural alignment. Back sleepers may prefer a medium to medium-firm surface that cushions the lower back without allowing the midsection to sink too deeply. Stomach sleepers generally benefit from a firmer, more supportive feel that helps keep the hips from settling below the chest. Sleepers who move between positions may want a balanced feel that offers contouring without making it difficult to turn over. Body weight, height and personal comfort preferences also affect how a mattress feels, so firmness labels should be treated as helpful guidance rather than an absolute standard. Couples can consider how well a mattress isolates motion, how much space each person needs and whether both sleepers prefer the same level of cushioning. Edge support is another practical detail, particularly for anyone who sits on the side of the bed, shares the mattress or wants to make full use of the king-size surface. Mattress height matters as well. A thicker profile may provide more room for multiple comfort layers, while a lower profile can make it easier to get in and out of bed and may work better with an existing bed frame. Before ordering, measure the bedroom, stairways and doorways, then confirm that the foundation is compatible with the mattress. A king mattress typically measures 76 inches wide by 80 inches long, though exact dimensions can vary slightly by manufacturer. Check the product details for recommended foundations, cover care instructions, sleep trial terms and warranty information so the mattress fits both your comfort needs and your space

A cooling memory foam king mattress can be a thoughtful choice for a primary bedroom, a guest suite or a newly furnished home. It may suit couples who want room to spread out without giving up the pressure relief and motion control of foam, as well as individuals who prefer a spacious surface for reading, relaxing or changing positions throughout the night. It can also make a practical housewarming or wedding gift when the recipient has selected the size and comfort feel, since a mattress is deeply personal and requires the right bedroom dimensions and support system. If the mattress is being purchased for someone else, a gift card or shared shopping experience may be more useful than choosing a specific feel without their input. To get the most from a new mattress, pair it with breathable sheets, a lightweight comforter and a pillow that supports your preferred sleeping position. Dense, tightly woven bedding can hold warmth against the body, while natural or moisture-managing fabrics may promote a fresher sleep environment. Keep the bedroom comfortably ventilated, leave space around the bed when possible and follow the care instructions for the removable cover. A new memory foam mattress may have a noticeable scent when first unpacked; allowing it to air out in a well-ventilated room according to the manufacturer’s directions can help it dissipate. Mattresses in a box may also need time to expand fully before use. During cooler months, the same breathable construction can help maintain a more even feel beneath warmer bedding rather than making the surface feel excessively warm. With the right firmness, supportive base and sleep accessories, a cooling memory foam king mattress can create a comfortable retreat that helps make better zzz's part of everyday life.

What is a cooling memory foam mattress? + -

A cooling memory foam mattress combines pressure-relieving foam with materials or design features intended to promote airflow and provide a cooler sleep surface. Common cooling elements include breathable covers, gel-infused foam and ventilated foam layers.

How does cooling memory foam feel? + -

Cooling memory foam typically has a contouring feel that cushions the body while providing support. The exact feel can range from plush to firm depending on the mattress construction and foam layers.

What materials are commonly used in cooling memory foam mattresses? + -

Common materials include memory foam, gel-infused foam, ventilated foam and breathable fabric covers. Some mattresses also combine memory foam with other comfort or support foams.

Can a cooling memory foam mattress be used with an adjustable base? + -

Many cooling memory foam mattresses are designed to work with adjustable bases. Check the mattress and base care instructions to confirm compatibility before pairing them.

How should you care for a cooling memory foam mattress? + -

Use a breathable mattress protector, rotate the mattress if the care instructions recommend it and keep the surface free of moisture. Always follow the manufacturer’s cleaning and care guidelines for the cover and foam layers.