Core Support Cal King Mattresses

Experience unparalleled comfort and stability with our collection of core support cal king mattresses, designed to elevate your sleep to new heights. Perfectly balancing spacious luxury with essential support, these mattresses cater to those who crave a restful night's sleep without compromise. Ideal for larger bedrooms, the California King size provides ample room for stretching out, while the core support system ensures that your body is cradled in optimal alignment. Explore our selection and discover how core support cal king mattresses can transform your nightly routine into a rejuvenating escape.

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Sleepy's Rest Firm 2.0 Innerspring Mattress

6320

Starting at

$450⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

⏰ 72 hour sale ends Monday!

Beautyrest Greenwood 10.5" Firm Mattress

3108

Starting at

$520⁹⁹

$1300⁹⁹

$780 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Toss and Turn

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2322

Starting at

$652⁹⁹

$1500⁹⁹

$848 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

2582

Starting at

$710⁹⁹

$1700⁹⁹

$990 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 11.25" Firm Mattress

1611

Starting at

$585⁹⁹

$1300⁹⁹

$715 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Pain
Bed Partner

72 hour sale ends Monday!

Serta Perfect Sleeper Sleep Excellence Plush Mattress

577

Starting at

$1000⁹⁹

$1700⁹⁹

$700 OFF

Plush Comfort, best for

Side Sleepers
Pain
Toss and Turn
Pain

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Sealy Essentials Sudley 8.5" Firm Mattress

907

Starting at

$1000⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

72 hour sale extended - ends today!

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1467

Starting at

$652⁹⁹

$1500⁹⁹

$848 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Toss and Turn
Pain
Bed Partner

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1399

Starting at

$855⁹⁹

$2000⁹⁹

$1145 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1384

Starting at

$1000⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Bed Partner
Pain
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 12" Plush Euro Top Mattress

569

Starting at

$636⁹⁹

$1400⁹⁹

$764 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

542

Starting at

$621⁹⁹

$1380⁹⁹

$759 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Allergies
Temperature

72 hour sale ends Monday!

Sleepy's By Sealy Premium Memory Foam Mattress

119

Starting at

$2300⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900 12" Plush Mattress

698

Starting at

$730⁹⁹

$1700⁹⁹

$970 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo 12" Medium Firm Cooling Hybrid Mattress

134

Starting at

$567⁹⁹

$1450⁹⁹

$883 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo 10" Medium Cooling Hybrid Mattress

114

Starting at

$437⁹⁹

$1250⁹⁹

$813 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo 11" Medium Firm Cooling Hybrid Mattress

196

Starting at

$492⁹⁹

$1300⁹⁹

$808 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Pressuresmart MF 15" Plush Euro Top Mattress

Starting at

$2100⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Sealy Essentials Winter Green 12" Plush Euro Top Mattress

345

Starting at

$621⁹⁹

$1380⁹⁹

$759 OFF

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Temperature

72 hour sale ends Monday!

Zinus Green Tea 12 Cushioned Firm Memory Foam Mattress

1081

Starting at

$499⁰⁰

$1000⁹⁹

$501 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Serta Perfect Sleeper Midsummer Nights 11" Plush Eurotop Mattress

562

Starting at

$799²⁰

$999⁰⁰

$200 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo 8" Firm Cooling Hybrid Mattress

Starting at

$360⁹⁹

$900⁹⁹

$540 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Pain
Temperature

72 hour sale ends Monday!

Sealy Posturepedic Plus Hybrid High Point 14" Plush Mattress

4484

Starting at

$2899⁰⁰

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

Receive $200 Instant Gift⁴ with purchase.

Sealy Posturepedic Plus Hybrid High Point 14" Firm Mattress

3762

Starting at

$2899⁰⁰

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

Receive $200 Instant Gift⁴ with purchase.

Beautyrest PressureSmart 2.0 Extra Firm 13.5" Mattress

1469

Starting at

$2900⁹⁹

Extra Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature
Bed Partner

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tempur-Pedic TEMPUR-LuxeAdapt 1.0 13" Soft Mattress

1456

Starting at

$3429³⁰

$4899⁰⁰

$1470 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner

Receive $300 Instant Gift⁴ with purchase.

Core Support Cal King Mattresses

When it comes to creating a restful sanctuary, the right mattress makes all the difference, especially for those seeking the expansive comfort of a California king. Core support Cal King mattresses are designed with thoughtful engineering to provide a balanced blend of plushness and firm support, making them an excellent choice for couples, families, and anyone who values extra room to stretch out after a long day. These mattresses feature specialized support systems—often with reinforced centers, advanced coil technologies, or layered foams—that help maintain spinal alignment and reduce pressure points, which is especially important for those who experience back discomfort or simply want to wake up feeling refreshed. Imagine the gentle support cradling your body as you drift off to sleep, whether you’re winding down after a spring hike, sharing bedtime stories with your kids, or simply savoring a quiet moment with your partner. The generous dimensions of a Cal King offer ample space for taller individuals or anyone who loves to sprawl, making it a practical upgrade for master bedrooms or guest suites where comfort is a priority.

Selecting a core support Cal King mattress involves considering your unique sleep needs and preferences. For side sleepers, the enhanced support can help cushion shoulders and hips while maintaining proper alignment, while back and stomach sleepers benefit from the sturdy base that keeps the spine in its natural curve. These mattresses are also a thoughtful gift for newlyweds setting up a new home, parents looking to refresh their bedroom, or anyone celebrating a milestone like a housewarming or anniversary. With the arrival of warmer months in May, many people find themselves reevaluating their sleep setup to ensure cool, comfortable rest through the summer. Core support Cal King mattresses often incorporate breathable materials and cooling technologies, helping to regulate temperature and wick away moisture on balmy nights. Whether you’re upgrading your own space or surprising a loved one, these mattresses deliver both luxurious comfort and long-lasting durability, adapting to your lifestyle changes and supporting restful sleep season after season.

If you’re exploring options for a more supportive and spacious sleep surface, a core support Cal King mattress can be a transformative addition to your home. These mattresses are designed to stand the test of time, providing a stable foundation for years of restorative sleep. For more information about the features and benefits of these mattresses, and to browse a wide selection suited to various sleep preferences, visit our comprehensive Core Support Mattresses page. Here, you’ll find resources to help you make an informed decision, ensuring that your next mattress not only fits your space but also supports your best sleep yet.