King Size Breathable Mattresses

Explore King Size Breathable Mattresses to find a spacious sleep solution that fits your comfort preferences, bedroom style and budget. Shop a range of king size options at Mattress Firm and compare mattress types, sizes and prices to find the right fit for your nighttime routine.

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Sleepy's By Sealy Memory Foam Medium Mattress

3474

Starting at

$889⁹⁹

Medium Comfort, best for

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

Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$1099⁹⁹

$2199⁹⁹

$1100 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's Basic Memory Foam Firm Mattress

3213

Starting at

$299⁷⁷

$999⁹⁹

$700 OFF

Firm Comfort, best for

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

Beautyrest PressureSmart 2.0 Plush 11.75" Mattress

6251

Starting at

$1149⁹⁹

$2299⁹⁹

$1150 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's By Sealy Memory Foam Plush Mattress

2776

Starting at

$999⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's Rest Medium Innerspring Mattress

7001

Starting at

$344⁰⁰

$1249⁹⁹

$906 OFF

Medium Comfort, best for

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

Sleepy's Rest Firm 2.0 Innerspring Mattress

7001

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest PressureSmart 2.0 Plush Pillow Top 13.75" Mattress

2695

Starting at

$1199⁹⁹

$2399⁹⁹

$1200 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Sleep Excellence Medium PillowTop Mattress

1433

Starting at

$1999⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2784

Starting at

$1499⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest PressureSmart 2.0 Hybrid Medium 13" Mattress

1758

Starting at

$1474⁹⁹

$2949⁹⁹

$1475 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3296

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

2233

Starting at

$1299⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 14.5" Firm Mattress

1809

Starting at

$2799⁰⁰

$3099⁰⁰

$300 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5555

Starting at

$889⁹⁹

Medium Comfort, best for

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

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5555

Starting at

$1019⁹⁹

Medium Comfort, best for

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

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1863

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

1810

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

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

5555

Starting at

$809⁹⁹

Medium Comfort, best for

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

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1745

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

Purple Original Mattress

59743

Starting at

$1760⁰⁰

$2199⁰⁰

$439 OFF

Medium Comfort, best for

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

Sealy Essentials Winter Green 13" Plush Euro Pillow Top Mattress

548

Starting at

$1459⁹⁹

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Beautyrest BR800 12" Plush Euro Top Mattress

735

Starting at

$1399⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

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

981

Starting at

$4099⁰⁰

$4699⁰⁰

$600 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Sleepy's By Sealy Slumber Medium Mattress

175

Starting at

$709⁹⁹

$2299⁹⁹

$1590 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

1186

Starting at

$999⁰⁰

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

A king size breathable mattress can help create a cooler, more comfortable sleep environment by promoting airflow through the mattress and allowing heat and moisture to move away from your body. Look for cooling king mattresses made with breathable materials such as ventilated memory foam, responsive innerspring coils or airy latex. Hybrid king mattresses are especially popular for temperature-conscious sleepers because their coil systems encourage airflow while comfort layers provide pressure relief. Cooling covers made with moisture-wicking or temperature-regulating fabrics can add another layer of comfort, helping you settle in for restful zzz's without feeling overly warm. Choosing a breathable king size mattress is a practical way to enjoy spacious sleep without sacrificing support or comfort. The best king size breathable mattress for you depends on your preferred sleep position, body type and ideal firmness. Side sleepers may appreciate a breathable medium or medium-soft king mattress with cushioning for the shoulders and hips, while back and stomach sleepers often prefer a firmer surface with supportive layers that help promote comfortable spinal alignment. Couples can also benefit from king size cooling mattresses with motion-isolating foam, reinforced edges and individually wrapped coils, which provide generous personal space while reducing the impact of movement during the night. Compare breathable memory foam, latex and hybrid king mattresses to find the right balance of airflow, pressure relief, support and durability, then complete your sleep setup with breathable sheets, a cooling mattress protector and a supportive pillow.

What makes a mattress breathable? + -

Breathable mattresses typically use airflow-friendly materials and designs, such as ventilated foam, breathable fabric covers, coils or comfort layers that allow air to move through the mattress.

Which mattress materials are commonly used in breathable designs? + -

Common materials include innerspring coils, individually wrapped coils, latex, open-cell foam and moisture-wicking or breathable mattress covers. Mattress construction varies, so review the material details to find the feel and features you prefer.

How do breathable mattresses differ from traditional foam mattresses? + -

Breathable mattresses are designed with materials or internal structures that promote airflow. Traditional foam mattresses may have a more solid construction, while newer foam designs can include open-cell structures or ventilation for a more breathable feel.

How should I care for a breathable mattress? + -

Use a breathable mattress protector, wash bedding according to its care instructions and rotate the mattress if the manufacturer recommends it. Keep the sleep surface clean and follow the care guidelines provided with your mattress.

What type of bedding pairs well with a breathable mattress? + -

Lightweight sheets made from cotton, linen or moisture-wicking performance fabrics can complement a breathable mattress. Choose bedding based on the texture, warmth and feel you find most comfortable.