Breathable King Size Medium Mattresses

Find the comfort and support you need with Breathable King Size Medium Mattresses. Explore a range of king mattresses with a medium feel to help you create a sleep space that fits your preferences and lifestyle.

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Sleepy's By Sealy Memory Foam Medium Mattress

3474

Starting at

$589⁹⁹

$889⁹⁹

$300 OFF

Medium Comfort, best for

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

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

Tempur-Pedic TEMPUR-Adapt 11" Medium Previous Generation Mattress

3631

Starting at

$2029⁷⁷

$2899⁰⁰

$869 OFF

Medium Comfort, best for

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

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 BR800 13.5" Medium Pillow Top Mattress

1863

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

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 11.75" Medium Firm Mattress

1745

Starting at

$809⁹⁹

$1099⁹⁹

$290 OFF

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

Sleepy's By Sealy Slumber Cushion Firm Mattress

301

Starting at

$1999⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

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

Nectar Premier 13" Medium Memory Foam Mattress

486

Starting at

$1099⁰⁰

$1799⁰⁰

$700 OFF

Medium Comfort, best for

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

Serta Perfect Sleeper Nurture Night 13.5" Medium Mattress

1020

Starting at

$939⁰⁰

$1099⁰⁰

$160 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Oasis Sleep 14.5" Pillow Top Mattress

1009

Starting at

$1139⁰⁰

$1399⁰⁰

$260 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Black Series Two 16.5" Medium Pillow Top Mattress

293

Starting at

$3699⁰⁰

$4099⁰⁰

$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.

Tempur-Pedic TEMPUR-ProAdapt 2.0 12" Medium Hybrid Mattress

5970

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Medium Comfort, best for

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

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

Tempur-Pedic TEMPUR-ProAdapt 2.0 12" Medium Mattress

3858

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Medium Comfort, best for

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

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

A breathable king size medium mattress offers a spacious sleep surface with balanced comfort and airflow for couples, families and individual sleepers who want room to move. Medium-firm comfort can help provide a supportive feel without being too hard or too plush, making it a versatile choice for back sleepers, combination sleepers and many side sleepers. Look for breathable king mattresses with cooling covers, open-cell foams, gel-infused memory foam, individually wrapped coils or ventilated comfort layers that encourage air circulation throughout the night. These features can help reduce heat buildup and create a more comfortable sleep environment, especially for people who tend to sleep warm. Choosing the best breathable king size medium mattress starts with considering your preferred sleep position, pressure relief needs and partner preferences. A hybrid king mattress combines responsive coils with contouring foam for support, airflow and ease of movement, while a breathable memory foam king mattress may offer deeper body-conforming comfort with cooling materials designed to promote ventilation. Compare mattress construction, edge support, motion isolation and trial options to find a king size medium mattress that suits your sleep style. With the right combination of cooling materials and medium comfort, you can enjoy restorative zzz's on a generously sized mattress built for comfort and support.

What makes a mattress breathable? + -

Breathable mattresses typically use airflow-friendly materials and designs, such as ventilated foam, breathable fibers, innerspring coils or moisture-managing covers. These features allow air to move through the mattress rather than trapping heat.

What does medium firmness feel like? + -

A medium mattress offers a balanced feel between plush and firm. It usually provides noticeable cushioning while maintaining a more supportive, even surface for a range of sleep preferences.

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

Common materials include innerspring coils, ventilated memory foam, latex, gel-infused foam and breathable fabric covers. Mattress construction varies, so reviewing the materials and comfort layers can help you find the feel you prefer.

Are breathable medium mattresses available in different comfort constructions? + -

Yes. Breathable medium mattresses may feature innerspring, memory foam, latex or hybrid constructions. Each design can offer a different combination of cushioning, responsiveness and airflow.

How can you care for a breathable mattress? + -

Follow the care instructions provided with your mattress. Using a breathable mattress protector, rotating the mattress when recommended and keeping the sleep surface free of excess moisture can help maintain its condition.