Cal King Back Sleeper Mattresses

Find the right Cal King Back Sleeper Mattresses for your bedroom and sleep preferences at Mattress Firm. Explore a range of mattress sizes, comfort options and price points to help you choose a mattress that fits your space and supports your nightly 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

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 Firm 2.0 Innerspring Mattress

7001

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

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 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.

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

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

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

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

603

Starting at

$1379⁹⁹

Medium Comfort, best for

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

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 California king back sleeper mattress offers the extra length many taller sleepers need while providing a spacious sleep surface for couples. The best Cal king mattress for back sleepers should support the spine’s natural alignment, keep the hips from sinking too deeply and provide balanced pressure relief across the shoulders, hips and lower back. Medium-firm to firm mattresses are often a comfortable choice for back sleepers because they combine a supportive feel with enough cushioning to prevent pressure buildup. Look for features such as targeted lumbar support, reinforced edges, individually wrapped coils and responsive foam that helps distribute body weight evenly without making the mattress feel overly rigid. Material and comfort preferences also play an important role in choosing a California king back sleeper mattress. Hybrid mattresses pair supportive innerspring coils with foam or latex comfort layers for airflow, contouring and easier movement, while memory foam mattresses can provide close pressure relief and minimize motion transfer between partners. If you tend to sleep hot, consider breathable foams, cooling covers or a coil-based design that promotes airflow. A compatible California king bed frame or foundation is essential for proper support, and shoppers should compare mattress height, firmness, trial periods and warranty coverage before making a decision. With the right combination of support and comfort, a Cal king mattress can help back sleepers wake up feeling refreshed and ready to live well.

What mattress firmness is commonly preferred by back sleepers? + -

Many back sleepers prefer a medium to medium-firm feel that balances cushioning with a stable sleep surface. Personal comfort, body type and sleeping preferences can all influence the right firmness.

Which mattress materials are available for back sleepers? + -

Back sleeper mattresses are available in memory foam, innerspring, hybrid and latex designs. Memory foam can provide a contouring feel, while innerspring and hybrid mattresses often combine responsive support with cushioning.

What features should back sleepers look for in a mattress? + -

Consider a balanced feel, supportive construction, pressure-relieving comfort layers and consistent edge support. Breathable materials and motion-isolating features may also be helpful based on your preferences.

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

Hybrid mattresses combine coils with comfort layers such as memory foam or latex. This design offers a blend of responsiveness, cushioning and airflow, making it a popular option for back sleepers who want a balanced feel.

How can back sleepers choose between memory foam and innerspring mattresses? + -

Choose memory foam if you prefer a contouring, cushioned feel and reduced motion transfer. Choose an innerspring mattress if you prefer more bounce and airflow. A hybrid can offer characteristics of both designs.