King Size Mattresses for Side Sleepers

Find the right fit for your sleep space with King Size Mattresses for Side Sleepers. Explore a range of options designed for different comfort preferences and sleep styles, so you can choose a mattress that supports restful nights and helps you live well.

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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

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

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

$699⁹⁹

$999⁹⁹

$300 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Charlotte 2.0 Medium Euro Top Mattress

2615

Starting at

$839⁹⁹

$1499⁹⁹

$660 OFF

Medium Comfort, best for

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

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

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

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 BR800 13.5" Plush Pillow Top Mattress

2784

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

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

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5555

Starting at

$379⁹⁹

$889⁹⁹

$510 OFF

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

$429⁹⁹

$1019⁹⁹

$590 OFF

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

$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

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

5555

Starting at

$329⁹⁹

$809⁹⁹

$480 OFF

Medium Comfort, best for

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

A king size mattress can give side sleepers the extra space they need to change positions comfortably without disturbing a partner. The best king mattress for side sleepers cushions pressure points at the shoulders, hips and knees while keeping the spine properly aligned. Look for a medium-soft to medium-firm feel that allows the shoulders and hips to sink slightly into the comfort layers without creating an uncomfortable hammock effect. Memory foam and TEMPUR-Material™ mattresses are popular choices because they contour closely to the body, while hybrid mattresses combine pressure-relieving foam with supportive coils for added airflow, responsiveness and edge support. A breathable mattress cover, cooling comfort layers and a supportive base can also help create a more comfortable sleep environment throughout the night. King size mattresses measure approximately 76 inches wide by 80 inches long, making them a practical choice for couples, families and side sleepers who prefer more room to stretch out. Couples may benefit from a king mattress with strong motion isolation, especially if one person changes positions often, while reinforced edges can make it easier to use the full sleep surface and get in or out of bed. Consider your body type, preferred sleep position and comfort needs before choosing a king size mattress, and pair it with a supportive foundation and a properly lofted pillow. The right pillow helps fill the space between the head and mattress, supporting neutral neck alignment and complementing the pressure relief of a mattress designed for side sleepers.

What mattress firmness is best for side sleepers? + -

Side sleepers often prefer a medium to medium-soft mattress that cushions the shoulders and hips while keeping the spine comfortably aligned. Personal preference, body type and sleep position can also affect the ideal firmness.

What mattress materials are comfortable for side sleepers? + -

Memory foam, latex and hybrid mattresses can all work well for side sleepers. Memory foam offers contouring pressure relief, latex provides responsive cushioning and hybrids combine comfort layers with supportive coils.

What mattress features should side sleepers look for? + -

Look for a comfort layer that cushions the shoulders and hips, consistent support through the middle of the mattress and materials that help maintain a comfortable sleep temperature.

Are hybrid mattresses a good choice for side sleepers? + -

A hybrid mattress can be a good option for side sleepers when it includes enough cushioning on top of its supportive coil system. Look for comfort layers made from foam, latex or other pressure-relieving materials.

How can side sleepers choose between memory foam and latex mattresses? + -

Memory foam typically provides a more contouring feel, while latex tends to feel more responsive and buoyant. Consider whether you prefer a close, cradling sensation or easier movement across the surface.