Cal King Firm Mattresses With Breathable Surface

Shop Cal King Firm Mattresses With Breathable Surface to explore mattress options designed for California king beds and a firm feel. Compare available sizes, prices and details to find the right fit for your bedroom and sleep preferences.

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Beautyrest BR800 11.25" Firm Mattress

2242

Starting at

$1299⁹⁹

Firm Comfort, best for

Back, 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

$1999⁹⁹

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sleepy's Basic Memory Foam Firm Mattress

3239

Starting at

$299⁷⁷

$999⁹⁹

$700 OFF

Firm Comfort, best for

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

Sleepy's Rest Firm 2.0 Innerspring Mattress

7012

Starting at

$449⁹⁹

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

3306

Starting at

$1699⁹⁹

Extra Firm Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 14.5" Firm Mattress

1829

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.

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1753

Starting at

$1099⁹⁹

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

59759

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

$1999⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Nectar Classic 12" Firm Memory Foam Mattress

233

Starting at

$899⁰⁰

$1399⁰⁰

$500 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

Serta Perfect Sleeper Oasis Sleep 12" Extra Firm Mattress

912

Starting at

$1399⁰⁰

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-ProAdapt 2.0 12" Medium Hybrid Mattress

6031

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Tempur-Pedic TEMPUR-ProAdapt 2.0 12" Firm Mattress

5043

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Purple Plus Mattress

2012

Starting at

$2080⁰⁰

$2599⁰⁰

$519 OFF

Medium Comfort, best for

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

Tempur-Pedic TEMPUR-LuxeAdapt 2.0 13" Firm Mattress

1458

Starting at

$5099⁰⁰

$5599⁰⁰

$500 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Stearns & Foster Studio 14" Medium Mattress

1387

Starting at

$2199⁰⁰

$2499⁰⁰

$300 OFF

Medium Comfort, best for

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

Serta Perfect Sleeper Oasis Sleep 14.5" Firm Pillow Top Mattress

1187

Starting at

$1399⁰⁰

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple RestorePlus Cool Touch 13" Hybrid Mattress

1013

Starting at

$3900⁰⁰

$4699⁰⁰

$799 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Purple RestorePremier Cool Touch 13" Hybrid Mattress

857

Starting at

$4700⁰⁰

$5499⁰⁰

$799 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Purple Restore Cool Touch 11.5" Hybrid Mattress

792

Starting at

$3000⁰⁰

$3699⁰⁰

$699 OFF

Medium Comfort, best for

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

$300 ^◇ adjustable base instant gift with purchase.

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

242

Starting at

$1399⁰⁰

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-ProAdapt 12" Firm Previous Generation Mattress

6716

Starting at

$2869⁷⁷

$4099⁰⁰

$1229 OFF

Firm Comfort, best for

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

Beautyrest BR800 Greenwood 10.5" Firm Mattress

3408

Starting at

$569⁹⁹

$1299⁹⁹

$730 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Toss and Turn
Temperature
Pain

Stearns & Foster Estate 15" Firm Euro Pillow Top Mattress

2781

Starting at

$2999⁰⁰

$3299⁰⁰

$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 By Sealy Skye Hybrid Mattress

2371

Starting at

$999⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Previous Generation Mattress

1861

Starting at

$3429⁷⁷

$4899⁰⁰

$1469 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

A California King firm mattress with a breathable surface can deliver the supportive feel many sleepers want while promoting a cooler, more comfortable night’s rest. Designed with a spacious 72-by-84-inch sleep surface, a Cal King mattress is a practical choice for couples, taller sleepers and anyone who enjoys extra room to stretch out. Firm comfort layers help provide a stable, supportive feel, while breathable materials such as cotton, Tencel™, cooling fibers, ventilated foam or a moisture-wicking cover can encourage airflow across the sleep surface. This combination may help reduce heat buildup and keep the mattress feeling fresh, making a breathable California King firm mattress a smart option for hot sleepers and warm bedrooms. Choosing the right Cal King firm mattress depends on your preferred sleep position, body type and comfort needs. Back and stomach sleepers often appreciate a firmer sleep surface that helps support the hips, shoulders and spine, while combination sleepers may prefer a firm mattress with enough responsive cushioning for easier movement. Look for a California King mattress with breathable construction, airflow-enhancing coils, moisture-wicking fabric and pressure-relieving comfort layers to balance support with surface comfort. A mattress protector made with breathable, temperature-regulating materials and lightweight bedding can further support a cool sleep environment, helping you get better zzz's on a spacious Cal King bed.

What makes a firm mattress feel supportive? + -

Firm mattresses typically have a sturdier comfort layer and a supportive core that create a more solid sleep surface with less sink. The overall feel can vary based on the materials, construction and upholstery.

What materials are commonly used in breathable mattress surfaces? + -

Breathable mattress surfaces may include cotton, wool, Tencel™, rayon derived from bamboo or other ventilated fabric blends. Airflow can also be supported by perforated foam, coils or other breathable materials beneath the cover.

How does a breathable surface affect the feel of a firm mattress? + -

A breathable surface can provide a lighter, less enveloping feel compared with a dense, tightly quilted cover. The mattress may still feel firm while the surface materials add texture and comfort.

Are firm mattresses with breathable surfaces available in different constructions? + -

Yes. This category can include innerspring, hybrid and foam mattresses. Innerspring and hybrid models often pair coils with comfort materials, while foam models may use ventilated layers and breathable cover fabrics.

How should I care for a firm mattress with a breathable surface? + -

Use a compatible mattress protector, rotate the mattress if the manufacturer recommends it and follow the care instructions for the cover. Regularly washing bedding and allowing the mattress surface to air out can also help maintain a fresh sleep environment.