Cal King Anti Sag Mattresses

Discover the ultimate in comfort and support with our collection of Cal King anti-sag mattresses, designed to enhance your sleep experience. Perfect for those seeking a spacious sleeping surface without compromising on durability, these mattresses are crafted to maintain their shape and support over time. Whether you're upgrading your master bedroom or looking for a solution that supports restful sleep every night, our selection of Cal King anti-sag mattresses offers the quality and reliability you deserve. Explore options that cater to various sleep preferences and find the perfect fit for your lifestyle today.

Sort & Filter

Serta Perfect Sleeper Charlotte 2.0 Medium Euro Top Mattress

2355

Starting at

$1500⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Toss and Turn
Pain

Sleepy's Rest Firm 2.0 Innerspring Mattress

6439

Starting at

$450⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Serta iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

1655

Starting at

$2400⁹⁹

$3000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Temperature
Bed Partner
Pain

Save up to 749 on a premium adjustable base with mattress purchase. Use code ELEVATE (must add base to cart)

Beautyrest Greenwood 10.5" Firm Mattress

3186

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

2400

Starting at

$1500⁹⁹

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

2635

Starting at

$1700⁹⁹

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

1655

Starting at

$1300⁹⁹

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)

Stearns & Foster Estate 14.5" Firm Mattress

984

Starting at

$2999⁰⁰

Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Serta Perfect Sleeper Sleep Excellence Plush Mattress

653

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

913

Starting at

$400⁹⁹

$1000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1526

Starting at

$1500⁹⁹

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

1455

Starting at

$2000⁹⁹

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

1410

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

26736

Starting at

$1999⁰⁰

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Temperature
Allergies

Sleepy's By Sealy Slumber Cushion Firm Mattress

222

Starting at

$560⁹⁹

$2000⁹⁹

$1440 OFF

Medium Comfort, best for

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

Sealy Essentials Winter Green 13" Plush Euro Pillow Top Mattress

496

Starting at

$1460⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Allergies
Temperature

Beautyrest BR800 12" Plush Euro Top Mattress

580

Starting at

$1400⁹⁹

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

545

Starting at

$1380⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Allergies
Temperature

Sleepy's By Sealy Premium Memory Foam Mattress

125

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

739

Starting at

$1700⁹⁹

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)

Serta Perfect Sleeper Elkins III 10" Firm Mattress

1526

Starting at

$1200⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature
Toss and Turn

Tulo 12" Medium Firm Cooling Hybrid Mattress

136

Starting at

$1450⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Serta Perfect Sleeper Oasis Sleep 14.5" Pillow Top Mattress

692

Starting at

$1399⁰⁰

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Bed Partner
Temperature

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

Tulo 10" Medium Cooling Hybrid Mattress

117

Starting at

$1250⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Tulo 11" Medium Firm Cooling Hybrid Mattress

197

Starting at

$1300⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Pressuresmart MF 15" Plush Euro Top Mattress

Starting at

$1900⁹⁹

$2400⁹⁹

$500 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

Save up to 749 on a premium adjustable base with mattress purchase. Use code ELEVATE (must add base to cart)

Cal King Anti Sag Mattresses

Choosing a Cal King anti-sag mattress is about more than just upgrading your sleeping space—it's about investing in years of restorative comfort and support. California King mattresses are known for their extra length, making them a favorite for taller individuals or couples who enjoy stretching out without feeling confined. The anti-sag features in these mattresses are designed with longevity and resilience in mind, using advanced materials and construction techniques to ensure that your bed maintains its shape and support even after years of nightly use. Whether you’re a side sleeper who needs consistent support along the hips and shoulders, or a back sleeper who relies on the mattress to keep your spine aligned, anti-sag technology helps prevent the dreaded dips and valleys that can disrupt sleep quality. Many families find that investing in an anti-sag Cal King mattress is especially beneficial during the summer months, when kids are home from school and everyone’s schedule is a little more relaxed—movie nights and lazy mornings in bed become even more enjoyable when you know your mattress will stand up to the extra activity without losing its shape.

For couples, a Cal King anti-sag mattress offers ample space to move freely without disturbing one another, and the reinforced support zones help distribute weight evenly, making it an excellent choice for partners with different body types or sleep preferences. These mattresses also make thoughtful gifts for newlyweds setting up their first home, parents celebrating an anniversary, or anyone embarking on a new chapter—perhaps moving to a new house or refreshing a master bedroom for the summer. The durability of an anti-sag mattress means it’s a practical and lasting gift, one that will be appreciated every night for years to come. If you’re furnishing a guest room, a Cal King mattress with anti-sag technology ensures that your visitors experience hotel-level comfort, whether they’re staying for a single summer weekend or an extended holiday. Many people find that a supportive, sag-resistant mattress is especially important during July, when rising temperatures can make it harder to stay comfortable at night; the even surface helps prevent you from sinking and overheating, so you wake up feeling refreshed and ready for summer adventures.

When shopping for a Cal King anti-sag mattress, consider factors like firmness level, breathability, and specialized support features that align with your personal needs. Some models incorporate cooling technologies to help regulate temperature during the warmest months, while others offer enhanced edge support for those who like to sit or sleep near the sides of the bed. If you’re looking for additional targeted support, you might also want to explore Cal King Zoned Support Mattresses, which are designed to provide extra reinforcement exactly where your body needs it most. Ultimately, a Cal King anti-sag mattress is a foundation for better sleep, greater comfort, and lasting peace of mind—no matter how you use your bedroom, from quiet nights to lively family gatherings. With thoughtful selection and care, your new mattress will become a welcome retreat, season after season.