12 Inch Full Size Mattress

Discover the perfect blend of comfort and support with a luxurious full-size mattress that stands at an impressive twelve inches. Ideal for those seeking a spacious sleep surface without compromising on quality, this mattress size offers ample room for singles or cozy space for couples. Whether you're upgrading your bedroom or furnishing a guest room, a full-size mattress provides versatile sleeping arrangements while ensuring restful nights. With layers designed to enhance your sleep experience, you'll wake up refreshed and ready to tackle the day. Explore your options and find the mattress that promises sweet dreams night after night.

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Tulo Lavender 12" Plush Memory Foam Mattress

594

Starting at

$450⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Temperature

72 hour sale ends Monday!

Serta iSeries 2.0 Hybrid 1000 12" Medium Mattress

1878

Starting at

$1600⁹⁹

$2000⁹⁹

$400 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Bed Partner
Pain

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest BR800 12" Medium Mattress

2794

Starting at

$480⁹⁹

$960⁹⁹

$480 OFF

Medium Comfort, best for

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

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Serta iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

1616

Starting at

$2300⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Temperature
Bed Partner
Pain

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

5072

Starting at

$790⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Toss and Turn
Pain
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

1388

Starting at

$750⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Bed Partner
Pain
Temperature

FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Purple Original Mattress

26705

Starting at

$1399⁰⁰

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Temperature
Allergies

Receive $300 Instant Gift⁴ with purchase.

Beautyrest BR800 12" Plush Euro Top Mattress

570

Starting at

$1100⁹⁹

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

72 hour sale ends Monday + FREE adjustable base with code ELEVATE (must add base to cart), FREE ADJUSTABLE BASE ³ up to $499 value with code ELEVATE (must add base to cart)

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

542

Starting at

$1040⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Allergies
Temperature

72 hour sale ends Monday!

12 Inch Full Size Mattress

Selecting a 12 inch full size mattress is often about finding that perfect balance between comfort, style, and the practical needs of your space. A full size mattress at Mattress Firm delivers ample room for solo sleepers to stretch out, while still being compact enough to fit comfortably in apartments, guest rooms, or growing teens’ bedrooms. The 12-inch profile offers a plush, inviting surface that feels substantial and supportive, whether you’re sinking into bed after a long summer day or hosting overnight guests who appreciate a restful night’s sleep. This thickness often incorporates multiple layers—think memory foam, innerspring, or hybrid constructions—designed to cradle pressure points and minimize motion transfer. It’s a thoughtful choice for young adults moving into their first apartments, parents upgrading a child’s bed, or even couples who prefer a cozier sleeping arrangement without committing to the larger footprint of a queen or king. As the season shifts and days grow longer, a mattress with this kind of depth can help regulate temperature, offering breathable comfort that feels cool and refreshing on warm June nights.

When considering a mattress firm full size bed, it’s important to factor in how the mattress will complement your lifestyle and home. The versatility of a full size mattress firm option makes it ideal for multi-use spaces—think a home office that doubles as a guest room or a college student’s dorm where every square foot counts. The added height of a 12-inch mattress not only enhances comfort but also adds a touch of luxury, making any bedroom feel more inviting. For those who value convenience, a full size mattress in a box 12 inch is an excellent solution, arriving compressed and rolled for easy transport through hallways, up stairs, or into tight spaces. This means you can refresh a room or surprise a loved one with a new bed without the hassle of traditional delivery. Gifting a mattress might seem unconventional, but for graduates, newlyweds, or anyone embarking on a new chapter, it’s a gesture that speaks to care and practicality—ensuring restful sleep for years to come. And for families with children transitioning from a twin to a larger bed, a mattress firm full size mattress provides the extra space needed for comfort as they grow, without overwhelming the room.

Mattress Firm offers a wide range of full size mattresses, making it easier to find the right fit for your unique needs. Whether you’re seeking a plush, cloud-like feel or a firmer, more supportive surface, the right 12-inch mattress can transform your nightly routine. As you explore options, consider how the mattress will be used: Is it for a main bedroom, a guest suite, or a multi-purpose space? Think about the sleeper’s preferences for firmness, sleep position, and any specific needs such as cooling technology or pressure relief. And if you’re comparing different profiles, you might also want to take a look at alternatives like the 10 Inch Full Mattress to see which thickness best suits your comfort and space requirements. With the right choice, you’ll create a welcoming retreat that supports quality sleep and fits seamlessly into your lifestyle, making every night a little more restful and every morning a bit brighter.