Cal King Comfortsense Gel Mattresses

Shop Cal King Comfortsense Gel Mattresses in a spacious California king size designed to complement your bedroom setup. Explore available options to find a mattress that suits your preferred feel, sleep style and space.

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Sleepy's By Sealy Memory Foam Medium Mattress

3503

Starting at

$589⁹⁹

$889⁹⁹

$300 OFF

Medium Comfort, best for

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

Sleepy's By Sealy Memory Foam Plush Mattress

2794

Starting at

$699⁹⁹

$999⁹⁹

$300 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Toss and Turn
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Serta Perfect Sleeper Sleep Excellence Medium PillowTop Mattress

1439

Starting at

$1449⁹⁹

$1999⁹⁹

$550 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2792

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3302

Starting at

$709⁹⁹

$1699⁹⁹

$990 OFF

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

2239

Starting at

$619⁹⁹

$1299⁹⁹

$680 OFF

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

1823

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.

Sleepy's 3" Gel Memory Foam Mattress Topper

398

Starting at

$269⁹⁹

Medium Comfort,

Temperature

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1868

Starting at

$819⁹⁹

$1499⁹⁹

$680 OFF

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

1816

Starting at

$859⁹⁹

$1999⁹⁹

$1140 OFF

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

1749

Starting at

$809⁹⁹

$1099⁹⁹

$290 OFF

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

59751

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

303

Starting at

$619⁹⁹

$1999⁹⁹

$1380 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 13" Plush Euro Pillow Top Mattress

549

Starting at

$779⁹⁹

$1459⁹⁹

$680 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Beautyrest BR800 12" Plush Euro Top Mattress

739

Starting at

$569⁹⁹

$1399⁹⁹

$830 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

Sleepy's By Sealy Slumber Medium Mattress

177

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

604

Starting at

$739⁹⁹

$1379⁹⁹

$640 OFF

Medium Comfort, best for

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

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

1192

Starting at

$859⁰⁰

$999⁰⁰

$140 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 12" Plush Mattress

1147

Starting at

$729⁹⁹

$1699⁹⁹

$970 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Nectar Luxe 14" Medium Memory Foam Mattress

238

Starting at

$1649⁰⁰

$2249⁰⁰

$600 OFF

Medium Comfort, best for

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

Serta Perfect Sleeper Nurture Night 13.5" Medium Mattress

1025

Starting at

$939⁰⁰

$1099⁰⁰

$160 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Gel Memory Foam Zoned Support Mattress Topper

122

Starting at

$60⁹⁹

$89⁹⁹

$29 OFF

Medium Comfort,

Temperature

Tempur-Pedic TEMPUR-AdaptMattress Topper

8524

Starting at

$299⁰⁰

$409⁰⁰

$110 OFF

Medium Comfort,

Temperature
Allergies

Serta Perfect Sleeper Nurture Night 13.5" Plush Mattress

921

Starting at

$939⁰⁰

$1099⁰⁰

$160 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Essentials Winter Green 12" Plush Euro Top Mattress

393

Starting at

$739⁹⁹

$1379⁹⁹

$640 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

Serta Perfect Sleeper Midsummer Nights 11" Plush Eurotop Mattress

886

Starting at

$859⁰⁰

$999⁰⁰

$140 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

California King Comfortsense Gel mattresses offer spacious comfort for sleepers who want more room to stretch out without sacrificing pressure relief or support. Designed for the longer California King mattress size, these gel mattresses combine responsive comfort layers with gel-infused foam that can help cushion the shoulders, hips and lower back. The California King dimensions—typically 72 inches wide by 84 inches long—make this size a smart choice for taller sleepers, couples who prefer extra legroom or anyone creating a roomy primary bedroom. With balanced support and a comfortable feel, a Cal King Comfortsense Gel mattress can help promote better spinal alignment and more restful zzz's night after night. A Cal King Comfortsense Gel mattress can also be a practical choice for sleepers looking for comfort with a cooler, more supported feel. Gel-infused comfort materials are designed to help distribute body weight, reduce pressure buildup and provide a responsive sleep surface that makes it easier to move and change positions. Choose a California King mattress with the firmness and feel that match your sleep style, then complete your setup with a compatible Cal King bed frame, foundation, sheets and mattress protector. Shop Mattress Firm to compare Cal King Comfortsense Gel mattresses and find the right combination of cooling comfort, durable support and everyday value.

What are Cal King Comfortsense Gel mattresses made of? + -

Cal King Comfortsense Gel mattresses typically combine comfort layers with gel-infused foam and supportive mattress materials. The exact construction can vary by model.

What does gel-infused foam do in a Comfortsense Gel mattress? + -

Gel-infused foam is designed to add a responsive feel to the comfort layers while complementing the mattress’s overall cushioning and support system.

Are Cal King Comfortsense Gel mattresses available in different firmness feels? + -

Comfortsense Gel mattresses may be offered in a range of feels, from plush to more supportive options. Review each model’s comfort description to find the feel that suits your preferences.

What type of foundation works with a Cal King Comfortsense Gel mattress? + -

A compatible foundation, platform bed or adjustable base can typically be used with a Comfortsense Gel mattress. Always check the model’s care guide for foundation requirements.

How should I care for a Cal King Comfortsense Gel mattress? + -

Use a mattress protector, rotate the mattress if recommended and follow the care instructions provided with your model. Avoid bending, folding or placing the mattress on an incompatible surface.