Labor Day Sale On King Size Side Sleeper Mattresses

Shop the Labor Day On King Size Side Sleeper Mattresses at Mattress Firm to find a king size mattress that fits your sleep preferences and budget. Explore a range of options for side sleepers and take advantage of seasonal savings while supplies last.

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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 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

Serta Perfect Sleeper Charlotte 2.0 Medium Euro Top Mattress

2615

Starting at

$1499⁹⁹

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

$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

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

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

A Labor Day is a great time to shop for a king size side sleeper mattress that combines spacious comfort with targeted pressure relief. Side sleepers often benefit from a mattress with enough cushioning to contour around the shoulders and hips while maintaining supportive alignment through the spine. Explore king mattresses with memory foam, hybrid or responsive innerspring construction to find the feel that suits your sleep style. A medium or medium-soft king mattress may help relieve pressure for many side sleepers, while zoned support, individually wrapped coils and adaptable comfort layers can provide a balanced combination of cushioning and stability. During the Labor Day mattress , compare king size side sleeper mattresses by comfort, support, cooling features and overall value. A breathable cover, ventilated foam or a coil-based design may help promote airflow for a more comfortable night’s sleep, especially if you tend to sleep warm. Shopping a king mattress can also make it easier to upgrade your entire sleep space with a compatible king bed frame, adjustable base, pillows and bedding. With expert guidance and a wide selection of trusted mattress brands, Mattress Firm can help you find a king size mattress that supports better zzz's and makes sleep easy™.

What mattress materials are commonly available for side sleepers? + -

Mattresses for side sleepers commonly feature memory foam, latex, innerspring or hybrid construction. Memory foam contours to the body, latex offers a responsive feel and hybrids combine foam layers with individually wrapped coils.

What firmness is typically preferred by side sleepers? + -

Many side sleepers prefer a medium to medium-soft feel with cushioning comfort layers. Personal comfort preferences, body shape and sleep position can all influence the ideal firmness.

What mattress features should side sleepers look for during the Labor Day ? + -

Look for comfort layers made with memory foam or other pressure-relieving materials, a supportive core and a cover designed for breathability. Hybrid designs can also offer a balance of cushioning and responsive support.

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

Hybrid mattresses combine foam comfort layers with a coil support system. This construction can provide a blend of cushioning, responsiveness, airflow and edge support for side sleepers.

How can side sleepers choose between memory foam and an innerspring mattress? + -

Memory foam is known for its contouring feel and reduced motion transfer, while innerspring mattresses typically offer a more responsive feel and increased airflow. A hybrid mattress combines elements of both designs.