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

6375

Starting at

$450⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest Greenwood 10.5" Firm Mattress

3153

Starting at

$1300⁹⁹

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

2355

Starting at

$672⁹⁹

$1500⁹⁹

$828 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

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

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

2608

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

1632

Starting at

$615⁹⁹

$1300⁹⁹

$685 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Pain
Bed Partner

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

Beautyrest BR800 12" Medium Mattress

2820

Starting at

$559⁹⁹

$1300⁹⁹

$741 OFF

Medium Comfort, best for

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

72 hour sale ends Monday!

Serta Perfect Sleeper Sleep Excellence Plush Mattress

613

Starting at

$1700⁹⁹

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

910

Starting at

$400⁹⁹

$1000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1498

Starting at

$672⁹⁹

$1500⁹⁹

$828 OFF

Medium Comfort, best for

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

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

1435

Starting at

$855⁹⁹

$2000⁹⁹

$1145 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 Silver BRS900 11.75" Medium Firm Mattress

1392

Starting at

$800⁹⁹

$1000⁹⁹

$200 OFF

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)

Purple Original Mattress

26715

Starting at

$1499⁰⁰

$1999⁰⁰

$500 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Temperature
Allergies

Beautyrest BR800 12" Plush Euro Top Mattress

577

Starting at

$590⁹⁹

$1400⁹⁹

$810 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

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

543

Starting at

$690⁹⁹

$1380⁹⁹

$690 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Allergies
Temperature

Sleepy's By Sealy Premium Memory Foam Mattress

122

Starting at

$1150⁹⁹

$2300⁹⁹

$1150 OFF

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

719

Starting at

$730⁹⁹

$1700⁹⁹

$970 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature

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

Tulo 10" Medium Cooling Hybrid Mattress

116

Starting at

$437⁹⁹

$1250⁹⁹

$813 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

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

Pressuresmart MF 15" Plush Euro Top Mattress

Starting at

$1750⁹⁹

$2100⁹⁹

$350 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 13" Medium Firm Cooling Hybrid Mattress

157

Starting at

$562⁹⁹

$1500⁹⁹

$938 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Sealy Essentials Winter Green 12" Plush Euro Top Mattress

346

Starting at

$690⁹⁹

$1380⁹⁹

$690 OFF

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Temperature

Zinus Green Tea 12 Cushioned Firm Memory Foam Mattress

1082

Starting at

$499⁰⁰

$1000⁹⁹

$501 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature

Serta Perfect Sleeper Midsummer Nights 11" Plush Eurotop Mattress

579

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

Sealy Posturepedic Plus Hybrid High Point 14" Plush Mattress

4485

Starting at

$2899⁰⁰

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

Core Support Cal King Mattresses

Choosing a Core Support Cal King mattress is about much more than just finding a place to rest at night—it’s about investing in your long-term comfort, well-being, and the overall quality of your sleep. The California King size is renowned for its extra length, offering taller individuals the space they need to stretch out fully without feeling cramped. This makes it a popular choice for couples, families with young children who climb in for nighttime snuggles, or even pet owners who share their bed with a furry companion or two. The focus on core support means these mattresses are specifically engineered to promote healthy spinal alignment and provide consistent comfort across the entire surface. Whether you’re a back sleeper who needs firmer lumbar reinforcement, a side sleeper who benefits from pressure relief at the hips and shoulders, or someone who tosses and turns and needs stable support, these mattresses are designed to cater to a wide range of sleep preferences and body types. As the summer months settle in and the days grow longer, having a mattress that offers both breathability and robust support can make all the difference in ensuring you wake up refreshed, even during the warmest nights.

Gifting a Core Support Cal King mattress is a thoughtful gesture for newlyweds setting up their first home together, parents looking to upgrade their master bedroom, or anyone celebrating a milestone like a housewarming or anniversary. The generous dimensions and advanced support features make this mattress type an ideal centerpiece for a spacious bedroom retreat. Imagine the luxury of sprawling out on a mattress that cradles every curve and supports every joint, especially after a long day of summer activities—whether it’s a backyard barbecue, a day at the lake, or simply chasing after the kids in the yard. These mattresses are crafted with modern materials that often include cooling technologies, motion isolation, and edge support, all of which contribute to a restful, uninterrupted night’s sleep. Choosing the right mattress involves considering factors such as your preferred sleep position, any chronic aches or pains, and whether you need features like hypoallergenic covers or reinforced edges for extra stability. If you’re unsure where to start, exploring the full range of Core Support Mattresses can help you find the perfect fit for your unique needs and lifestyle.

For those who value both function and luxury, a Core Support Cal King mattress can transform the sleep experience, making your bedroom feel like a personal sanctuary. The ample surface area encourages relaxation, whether you enjoy reading late into the evening, sharing coffee in bed on lazy weekend mornings, or simply savoring a few quiet moments before the day begins. As temperatures rise in June, features like enhanced airflow and moisture-wicking fabrics become especially valuable, helping to keep you cool and comfortable through the night. Investing in a mattress with targeted core support can also pay dividends in daily life, as proper spinal alignment and pressure relief are linked to better posture, reduced discomfort, and improved energy levels throughout the day. No matter your reason for shopping, taking the time to select a mattress that meets your specific needs ensures that you’ll enjoy the benefits of restorative sleep season after season, year after year.