Firm mattresses offer a strong level of support, making them ideal for stomach and back sleepers who need more stability.

On the mattress firmness scale, firm mattresses typically fall towards the higher end, around 7–8 out of 10. However, mattress comfort feel is subjective and can vary based on personal preferences.

Visit any of our 8 store locations to purchase a firm mattress from premium manufacturers or our private label brand. We offer firm mattresses in a variety of sizes and types, including innerspring, foam, hybrid, TEMPUR-Material, and latex mattresses.

Please note: All firm mattress purchases, whether made in our stores or on our website, are subject to California recycling fees.

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Firm MattressesFoam Mattresses

Romper - Firm Tight Top 6.5" Foam Mattress

OC Mattress' Romper is a 6.5-inch, firm-feel tight top foam mattress featuring heat-regulating and moisture-wicking fabric, along with a CertiPUR-US certified high-density comfort layer for lasting coolness. Its high density...
$245.00
Firm MattressesFull / Double Mattresses

Breakwater - Firm 9" Spring Mattress

OC Mattress' Breakwater is an 9-inch, firm-feel spring mattress featuring a 357 VertiCoil® innerspring system and a Tri-Zone foam encasement design. It includes swirl gel memory foam, Eco-Flex™ high-density foam,...
$399.00
Firm MattressesFull / Double Mattresses

Maverick - Firm 11.5" Spring Mattress

OC Mattress' Maverick is an 11.5-inch firm-feel spring mattress featuring an individually wrapped coil system with a Tri-Zone foam encasement design. It includes swirl gel memory foam, Eco-Flex™ high-density foam,...
$529.00
CA King MattressesFirm Mattresses

Bayside - Firm 15.5" Spring Mattress

The OC Mattress Bayside is a 15.5-inch, medium-feel spring mattress featuring double-tempered 14.5 gauge encased coils and gel memory foam. It includes a pressure-sensitive cotton cooling surface that helps reduce...
$629.00
CA King MattressesFirm Mattresses

Arch Rock - Firm 14.5" Spring Mattress

OC Mattress' Arch Rock is a 14.5-inch, firm-feel spring mattress made with 660 Series Wrapped Coils and Natural Talalay Latex. It features a blended organic cotton quilted surface made with...
$699.00
CA King MattressesFirm Mattresses

Pearl - Firm 13" Spring Mattress

OC Mattress' Pearl is a 13-inch firm-feel spring mattress featuring an individually wrapped nested coil system, Tri-Zone foam encasement design, and CoolTouch temperature regulating fabric. Made with CertiPUR-US® certified foam,...
$979.00
CA King MattressesFirm Mattresses

Pearl - Firm 13" Hybrid Mattress

OC Mattress' Pearl is a 13-inch, firm-feel hybrid mattress that features a 7 Series foam-encased pocketed coil system, charcoal memory foam, CoolStream® cooling fabric, and a CertiPUR-US® high-density comfort layer....
$979.00
CA King MattressesFirm Mattresses

Morro Bay - Firm Euro Top 15" Spring Mattress

OC Mattress' Morro Bay is a 15-inch, firm-feel spring mattress made with 744 Series Wrapped Coils and Natural Talalay Latex. It features a Euro top, cooling cover for heat dissipation,...
$1,169.00
CA King MattressesFirm Mattresses

5th Avenue Flip - Firm 13" Hybrid Mattress

OC Mattress' 5th Avenue Flip is a 13-inch, firm-feel tight-top hybrid mattress with double-side construction. Built in the USA, it is designed for lasting durability. Features Hybrid: Foam & Spring...
$1,179.00
CA King MattressesFirm Mattresses

Pearl Luxe - Firm 14" Spring Mattress

OC Mattress' Pearl Luxe is a 14-inch firm-feel spring mattress featuring an individually wrapped nested coil system and a Tri-Zone foam encasement design. It has Tencel fabric, which is softer...
$1,299.00
CA King MattressesDiamond Mattress

Rally 3 - Firm 12" Cooling Foam Mattress

Diamond Mattress' Rally 3 is a 12-inch, firm-feel cooling foam mattress that delivers weightless feel and orthopedic support. Hyper-conductive Copper Bounce Foam & Responsive Gel Memory Foam provide precise body...
$1,299.00
CA King MattressesDiamond Mattress

Rally 3 - Firm 12" Cooling Hybrid Mattress

Diamond Mattress' Rally 3 is a 12-inch, firm-feel cooling hybrid mattress that delivers weightless feel and orthopedic support. Hyper-conductive Copper Bounce Foam & Responsive Gel Memory Foam provide precise body...
$1,299.00
CA King MattressesDiamond Mattress

Onyx Ice - Firm 14" Foam Mattress

Diamond Mattress' Onyx Ice is a 14-inch, firm-feel gel memory foam mattress that will keep you cool while providing optimal alignment and pressure relief. You will enjoy a weightless feel...
$1,699.00
CA King MattressesFirm Mattresses

Brenham - Firm 13.5" Posturepedic® Plus Hybrid Mattress

Sealy's Posturepedic® Plus Brenham 13.5-inch, firm-feel hybrid mattress features the highest coil count Sealy® has to offer. Carefully engineered coils adapt and support every part of your body, while specialty...
$1,979.00 $1,879.00
AireloomFirm Mattresses

Summit - Firm 13" Hybrid Mattress

Aireloom's Summit 13-inch, firm-feel hybrid mattress merges Aire-Adapt™ memory foam, Aireluxe™ foam, and individually wrapped coils to provide a perfect balance of cool and comfortable sleep. It's cool-to-the-touch fabric with...
$2,129.00
CA King MattressesFirm Mattresses

High Point - Firm 14" Posturepedic® Plus Hybrid Mattress

Sealy's Posturepedic® Plus High Point 14-inch, firm-feel hybrid mattress features the highest coil count Sealy® has to offer. Carefully engineered coils adapt and support every part of your body, while...
$2,379.00 $2,179.00
CA King MattressesFirm Mattresses

Providence - Firm 10" Spring Mattress

Providence “Timeless” Firm Comfort Feel Pocket Sprung Mattress 768 (Q) Individual Coils/Wool & Cotton Natural Rubber Comfort Layers 602 Gram Weight Tencel-Faced Fabric 10-year Warranty
$2,379.00
Best SellersCA King Mattresses

ProAdapt® - Firm 12" TEMPUR® Mattress

Tempur-Pedic's ProAdapt® 12-inch, firm-feel mattress is built with our Advanced Relief™ Material. Experience adaptive and responsive comfort for deeply refreshing, rejuvenating sleep with the ProAdapt® Firm. Features Advanced Pressure ReliefUp...
$2,899.00 $2,699.00
AireloomCA King Mattresses

Linda Isle - Firm Euro Top 14" Spring Mattress

Aireloom's Linda Isle 14-inch, firm-feel euro top spring mattress is handcrafted using tempered 13 3/4 gauge individually wrapped coils and premium foams, including CopperGel™ Foam and Aireluxe™ Foam. This model...
$2,699.00
CA King MattressesFirm Mattresses

Relax - Firm 9" Latex Mattress

Relax “In A Class All Its Own” Firm Comfort Feel All Latex Mattress Wool and Cotton Fire Retardant Layer 602 Gram Weight Tencel-Faced Fabric 20-year Warranty
$3,149.00
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