Large Mattresses

Find the right fit for your space and sleep preferences with large mattresses from Mattress Firm. Explore spacious mattress sizes in a range of comfort options and price points to help you create a bedroom that feels just right. Compare your choices and find a large mattress for restful nights and better days.

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Beautyrest Silver BRS900 12" Plush Mattress

1149

Starting at

$1699⁹⁹

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Stearns & Foster Estate 15" Firm Euro Pillow Top Mattress

2781

Starting at

$2399⁰⁰

$2699⁰⁰

$300 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Beautyrest PressureSmart 2.0 Plush 11.75" Mattress

6252

Starting at

$1150⁰⁰

$2299⁹⁹

$1150 OFF

Plush Comfort, best for

Side Sleepers
Temperature
Bed Partner
Pain
Toss and Turn

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

Sealy Essentials Spruce 5.5" Firm Mattress

1372

Starting at

$449⁹⁹

$749⁹⁹

$300 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

Beautyrest Black Series Three 16.75" Plush Pillow Top Mattress

1471

Starting at

$3799⁰⁰

$4399⁰⁰

$600 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn

$300 ⁶ adjustable base instant gift with purchase.

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

Stearns & Foster Studio 14.5" Medium Euro Pillow Top Mattress

149

Starting at

$2399⁰⁰

$2699⁰⁰

$300 OFF

Medium Comfort, best for

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

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

604

Starting at

$1379⁹⁹

Medium Comfort, best for

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

Stearns & Foster Lux Estate 14.5" Medium Mattress

733

Starting at

$2699⁰⁰

$3299⁰⁰

$600 OFF

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Large mattresses offer more room to stretch out, change positions and enjoy a comfortable night’s sleep without feeling confined. King mattresses measure approximately 76 inches wide by 80 inches long, making them a popular choice for couples who want generous personal space, while California King mattresses measure approximately 72 inches wide by 84 inches long for extra length. A large bed can also be a practical option for families who share the mattress with children or pets, as well as sleepers who prefer more room to move. Explore supportive memory foam, responsive hybrid and traditional innerspring mattresses in large mattress sizes to find the comfort, pressure relief and support that fit your sleep style. Choosing the right large mattress involves more than selecting the biggest size available. Consider your bedroom dimensions, preferred firmness, sleeping position and available foundation before purchasing a king or California King mattress. Leave enough space around the bed for comfortable movement, and confirm that the mattress, bed frame, sheets and other bedding use matching dimensions. Mattress Firm Sleep Experts® can help you compare large mattresses from trusted brands, including options with cooling materials, motion isolation, adjustable base compatibility and reinforced edge support. With the right mattress and accessories, you can create a spacious sleep setup that helps you get better zzz's and live well.

What materials are commonly used in large mattresses? + -

Large mattresses may feature materials such as memory foam, innersprings, latex or hybrid combinations. Each construction offers a distinct feel, including contouring, responsiveness or a more traditional sleep surface.

How do I choose the right firmness for a large mattress? + -

Consider your preferred sleep position, comfort preferences and whether you enjoy a softer, medium or firmer feel. Testing different firmness options in a store can help you find a mattress that feels comfortable and supportive.

What bedroom styles work well with large mattresses? + -

Large mattresses pair well with spacious bedroom layouts, upholstered bed frames, platform beds and adjustable bases. Choose a frame and design that complement your room’s proportions and overall style.

What bedding do I need for a large mattress? + -

Look for sheets, mattress protectors, blankets and comforters designed to fit your mattress dimensions and depth. Deep-pocket sheets can be useful for mattresses with thicker profiles.

How can I keep a large mattress looking and feeling fresh? + -

Use a mattress protector, wash bedding regularly and follow the care instructions from the manufacturer. Rotating the mattress when recommended may also help promote more even wear.