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

6269

Starting at

$450⁹⁹

Firm Comfort, best for

Back and Stomach Sleepers
Pain

⏰ 72 hour sale ends Monday!

Beautyrest Greenwood 10.5" Firm Mattress

3088

Starting at

$520⁹⁹

$1300⁹⁹

$780 OFF

Firm Comfort, best for

Back and Stomach Sleepers
Pain
Toss and Turn

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

Tempur-Pedic TEMPUR-Adapt 1.0 11" Medium Mattress

2655

Starting at

$2899⁰⁰

Medium Comfort, best for

All Sleep Positions
Allergies
Bed Partner
Temperature

Receive $300 Instant Gift⁴ with purchase.

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2299

Starting at

$738⁹⁹

$1500⁹⁹

$762 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

05-17-2025_00-00-00#05-19-2025_23-59-00# 72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart),05-20-2025_00-00-00#12-31-2154_23-59-00# FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

2553

Starting at

$1700⁹⁹

Extra Firm Comfort, best for

Back and 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

1599

Starting at

$650⁹⁹

$1300⁹⁹

$650 OFF

Firm Comfort, best for

Back and Stomach Sleepers
Toss and Turn
Pain
Bed Partner

05-17-2025_00-00-00#05-19-2025_23-59-00# 72 hour sale ends Monday!

Beautyrest BR800 12" Medium Mattress

2766

Starting at

$650⁹⁹

$1300⁹⁹

$650 OFF

Medium Comfort, best for

All Sleep Positions
Toss and Turn
Pain
Bed Partner

05-17-2025_00-00-00#05-19-2025_23-59-00# 72 hour sale ends Monday!

Serta Perfect Sleeper Sleep Excellence Plush Mattress

552

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

902

Starting at

$1000⁹⁹

Firm Comfort, best for

Back and Stomach Sleepers
Pain

72 hour sale extended - ends today!

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1437

Starting at

$738⁹⁹

$1500⁹⁹

$762 OFF

Medium Comfort, best for

All Sleep Positions
Toss and Turn
Pain
Bed Partner

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1387

Starting at

$1000⁹⁹

$2000⁹⁹

$1000 OFF

Extra Firm Comfort, best for

Back and Stomach Sleepers
Bed Partner
Pain
Temperature

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1371

Starting at

$1000⁹⁹

Medium Comfort, best for

All Sleep Positions
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

564

Starting at

$700⁹⁹

$1400⁹⁹

$700 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

541

Starting at

$1380⁹⁹

Medium Comfort, best for

All Sleep Positions
Pain
Allergies
Temperature

72 hour sale ends Monday!

Sleepy's By Sealy Premium Memory Foam Mattress

110

Starting at

$2300⁹⁹

Medium Comfort, best for

All Sleep Positions
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

687

Starting at

$875⁹⁹

$1700⁹⁹

$825 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature

Tulo 12" Medium Firm Cooling Hybrid Mattress

134

Starting at

$1450⁹⁹

Medium Comfort, best for

All Sleep Positions
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

$1250⁹⁹

Medium Comfort, best for

All Sleep Positions
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

$1300⁹⁹

Medium Comfort, best for

All Sleep Positions
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

$1380⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Temperature

72 hour sale ends Monday!

Zinus Green Tea 12 Cushioned Firm Memory Foam Mattress

1080

Starting at

$1000⁹⁹

Firm Comfort, best for

Back and 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

555

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

$396⁹⁹

$900⁹⁹

$504 OFF

Firm Comfort, best for

Back and Stomach Sleepers
Toss and Turn
Pain
Temperature

05-17-2025_00-00-00#05-19-2025_23-59-00# 72 hour sale ends Monday!

Tempur-Pedic TEMPUR-ProAdapt 1.0 12" Firm Mattress

5171

Starting at

$4099⁰⁰

Firm Comfort, best for

Back and Stomach Sleepers
Temperature
Pain
Allergies

Receive $300 Instant Gift⁴ with purchase.

Tempur-Pedic TEMPUR-ProAdapt 1.0 12" Medium Mattress

5052

Starting at

$4099⁰⁰

Medium Comfort, best for

All Sleep Positions
Temperature
Pain
Allergies

Receive $300 Instant Gift⁴ with purchase.

Core Support Cal King Mattresses

Choosing the right mattress is a crucial decision that affects not only the quality of your sleep but also the overall health of your back and spine. When it comes to selecting a mattress, particularly a California King size with core support, it's important to consider both the size and the specific support features that will cater to your body's needs. California King mattresses, known for their ample length, are especially suited for taller individuals or those who enjoy extra space to stretch out. However, the core support system is what sets these mattresses apart, providing targeted support that helps maintain spinal alignment and reduces pressure points throughout the night.

Core support in mattresses refers to the construction technologies used to support the heaviest parts of the body, ensuring that the spine remains aligned while you sleep. This is particularly important for people who experience back pain or those who have a physically demanding lifestyle, as the right mattress can significantly affect recovery and overall physical health. As the seasons change and we approach the warmer months, it might also be worth considering core support mattresses with cooling technologies. Materials like gel-infused memory foam or breathable covers can help regulate body temperature, leading to a more comfortable sleep during warmer nights. For anyone considering upgrading their sleep experience, exploring the range of Core Support Mattresses could be the key to finding that perfect balance of comfort and support.

Gifting a mattress, particularly a high-quality California King with core support, could be a profoundly generous and thoughtful gesture. It's an ideal gift for significant life events such as weddings, housewarmings, or significant anniversaries, where the aim is to provide something both luxurious and practical. Imagine gifting a newly married couple the gift of restful, supportive sleep—an invaluable asset in the start of their new journey together. Or consider the impact of upgrading your own mattress to improve sleep quality—transforming every night into a recharging retreat. A mattress with adequate core support can be a sanctuary for those looking to improve their health and well-being through better sleep. As we spend about a third of our lives sleeping, investing in a mattress that supports your body correctly is not just about luxury; it's about fostering a foundation for daily well-being and long-term health.