King Dualcool Technology Mattresses

Explore King Dualcool Technology Mattresses in a spacious king size designed to complement a variety of sleep preferences, bedroom styles and budgets. Compare available options at Mattress Firm to find the right fit for your space and sleep routine.

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Beautyrest BR800 13.5" Plush Pillow Top Mattress

2795

Starting at

$1499⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3306

Starting at

$1699⁹⁹

Extra Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 11.25" Firm Mattress

2242

Starting at

$1299⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1873

Starting at

$1499⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1816

Starting at

$1999⁹⁹

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1753

Starting at

$1099⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 12" Plush Euro Top Mattress

745

Starting at

$1399⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 12" Plush Mattress

1149

Starting at

$1699⁹⁹

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Elkins III 11" Plush Euro Top Mattress

1610

Starting at

$600⁰⁰

$1199⁹⁹

$600 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Toss and Turn
Bed Partner

Beautyrest Black Series Two 16.25" Plush Pillow Top Mattress

295

Starting at

$3699⁰⁰

$4099⁰⁰

$400 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest Silver BRS900-C 14.5" Medium Mattress

797

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

Purple Restore Cool Touch 11.5" Hybrid Mattress

792

Starting at

$3000⁰⁰

$3699⁰⁰

$699 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Beautyrest Black Series Four 17.5" Medium Summit Pillow Top Mattress

610

Starting at

$5899⁰⁰

$6599⁰⁰

$700 OFF

Medium Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Tempur-Pedic TEMPUR-ProAdapt 12" Firm Previous Generation Mattress

6716

Starting at

$2869⁷⁷

$4099⁰⁰

$1229 OFF

Firm Comfort, best for

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

Tempur-Pedic TEMPUR-ProAdapt 12" Medium Previous Generation Mattress

6573

Starting at

$2869⁷⁷

$4099⁰⁰

$1229 OFF

Medium Comfort, best for

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

Beautyrest BR800 Greenwood 10.5" Firm Mattress

3408

Starting at

$569⁹⁹

$1299⁹⁹

$730 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

Beautyrest BR800 Greenwood 11.5" Medium Firm Mattress

3231

Starting at

$589⁹⁹

$1299⁹⁹

$710 OFF

Medium Comfort, best for

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

Beautyrest BR800 11.5" Medium Firm Mattress

3191

Starting at

$1299⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 Greenwood 13.5" Plush Pillow Top Mattress

2810

Starting at

$509⁹⁹

$919⁹⁹

$410 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-LuxeBreeze Medium Hybrid 13" Mattress

2151

Starting at

$6099⁰⁰

$6599⁰⁰

$500 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Beautyrest BR800 Greenwood 13.5" Medium Pillow Top Mattress

1883

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Previous Generation Mattress

1861

Starting at

$3429⁷⁷

$4899⁰⁰

$1469 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

Beautyrest BR800 Greenwood 11.25" Firm Mattress

1704

Starting at

$619⁹⁹

$1299⁹⁹

$680 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 Greenwood 12" Plush Euro Top Mattress

748

Starting at

$469⁹⁹

$1099⁹⁹

$630 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-ProBreeze Medium 12" Mattress

419

Starting at

$4699⁰⁰

$5199⁰⁰

$500 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Beautyrest Black Series Two 14.25" Firm Mattress

358

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.

King DualCool Technology mattresses are designed for sleepers who want the spacious comfort of a king mattress with advanced temperature-management features. DualCool Technology helps create a cool-to-the-touch sleep surface and promotes a more comfortable sleep environment by drawing heat away from the body. With generous room to stretch out, a king size mattress is an excellent choice for couples, families who share the bed with pets or children and anyone who prefers more personal space while sleeping. Explore king DualCool Technology mattresses in a range of comfort levels, including soft, medium and firm options, to find the feel that best supports your sleep preferences. A king DualCool Technology mattress can also provide the pressure-relieving comfort and support you need for restful zzz's night after night. Depending on the model, features may include responsive foam, individually wrapped coils, reinforced edge support and layers designed to contour to your body while helping maintain a balanced sleep temperature. Shop king mattresses with DualCool Technology at Mattress Firm to compare comfort, support and cooling features, then complete your sleep setup with a king bed frame, mattress protector, pillows and bedding. With expert guidance and convenient delivery options, finding a comfortable king cooling mattress can be simple.

What is DualCool Technology in a mattress? + -

DualCool Technology refers to cooling-focused materials and cover designs used in select mattresses to support a more temperature-conscious sleep environment.

What materials may be included in a DualCool Technology mattress? + -

Depending on the model, a DualCool Technology mattress may include breathable cover fabrics, cooling fibers, gel-infused foam or other materials selected for their temperature-management properties.

Are DualCool Technology mattresses available in different comfort feels? + -

Yes, the collection may include mattresses with different comfort feels and support constructions, such as foam, hybrid and innerspring designs.

How do I choose a DualCool Technology mattress? + -

Consider your preferred comfort feel, support style and mattress construction. Reviewing the materials and features of each model can help you find the best match for your sleep preferences.

What bedding works well with a DualCool Technology mattress? + -

Breathable sheets, lightweight blankets and moisture-managing mattress protectors can complement the temperature-conscious design of a DualCool Technology mattress.