12 Inch Full Size Mattress

Find the right 12 Inch Full Size Mattress for your bedroom and sleep preferences at Mattress Firm. Explore available options to compare styles, prices and comfort levels, then choose the mattress that fits your space and routine.

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Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5562

Starting at

$789⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest BR800 12" Plush Euro Top Mattress

737

Starting at

$1099⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900 12" Plush Mattress

1144

Starting at

$1399⁹⁹

Plush Comfort, best for

Side Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Purple Original Mattress

59751

Starting at

$1200⁰⁰

$1499⁰⁰

$299 OFF

Medium Comfort, best for

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

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

604

Starting at

$1039⁹⁹

Medium Comfort, best for

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

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2788

Starting at

$1179⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner
Temperature

FREE ADJUSTABLE BASE ³ with code ELEVATE

Tulo Bamboo 10" Medium Green Tea Memory Foam Mattress

5562

Starting at

$689⁹⁹

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ with code ELEVATE

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1813

Starting at

$1559⁹⁹

Extra Firm Comfort, best for

Back, Stomach Sleepers
Temperature
Pain
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Sealy Essentials Winter Green 13" Plush Euro Pillow Top Mattress

548

Starting at

$1169⁹⁹

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature
Toss and Turn
Allergies

A 12 inch full size mattress offers a balanced combination of comfort, support and space for sleepers who want more room than a twin without moving up to a queen. A full mattress typically measures 54 inches wide by 75 inches long, making it a practical choice for solo sleepers, guest rooms, teenagers and smaller bedrooms. The 12 inch profile provides enough room for multiple comfort layers, which may include breathable foam, pressure-relieving memory foam, responsive coils or a supportive hybrid design. Choosing the right 12 inch full mattress depends on your preferred feel, sleeping position and support needs. Side sleepers may enjoy cushioning around the shoulders and hips, while back and stomach sleepers often prefer a firmer, more supportive sleep surface. A full size 12 inch mattress can also make it easier to create a comfortable sleep setup without taking up the floor space of a larger bed. Look for features such as motion isolation, edge support, temperature-regulating materials and durable construction to help improve your nightly comfort. Mattress Firm offers full mattresses in a range of materials and feels, including memory foam, innerspring and hybrid mattresses, so you can compare options that fit your sleep style and budget. Pair your 12 inch full mattress with a compatible full size bed frame, foundation or adjustable base, then complete your setup with supportive pillows and breathable bedding for better zzz's.

What materials are commonly used in a 12 inch full size mattress? + -

A 12 inch full size mattress may include memory foam, gel-infused foam, latex, innersprings or hybrid layers. Each material contributes different comfort and support characteristics.

What firmness options are available for a 12 inch full size mattress? + -

These mattresses are available in soft, medium, medium-firm and firm options. The right choice depends on your preferred feel and sleeping style.

What type of foundation works with a 12 inch full size mattress? + -

A compatible platform bed, adjustable base, slatted foundation or traditional box spring may work, depending on the mattress design. Always check the manufacturer’s foundation guidelines before setting up your mattress.

How should a 12 inch full size mattress be cared for? + -

Use a breathable mattress protector, keep the sleep surface clean and follow the care instructions provided with the mattress. If the manufacturer recommends rotating the mattress, follow that schedule to help maintain an even sleep surface.

What sleeping positions work well with a 12 inch full size mattress? + -

A 12 inch full size mattress can accommodate side, back and combination sleepers. Choose a comfort level and material combination that matches your preferred sleeping position and feel.