Thick Mattresses

Shop Thick Mattresses at Mattress Firm to explore a range of mattress heights, sizes and comfort options for your bedroom. Compare your choices and find the mattress that fits your sleep preferences, space and budget.

Stearns & Foster Reserve 17" Plush Euro Pillow Top Mattress

473

Starting at

$5399⁰⁰

$6199⁰⁰

$800 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Stearns & Foster Reserve 17" Firm Euro Pillow Top Mattress

700

Starting at

$5399⁰⁰

$6199⁰⁰

$800 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Stearns & Foster Lux Estate 16" Firm Euro Pillow Top Mattress

908

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Firm Comfort, best for

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

$300 Instant Gift⁴ with purchase of a mattress set.

Stearns & Foster Reserve Duet 17" Firm Euro Pillow Top Mattress

Starting at

$5799⁰⁰

$6599⁰⁰

$800 OFF

Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Stearns & Foster Lux Estate 16" Plush Euro Pillow Top Mattress

836

Starting at

$3799⁰⁰

$4199⁰⁰

$400 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Sierra Sleep By Ashley Peak 2.0 8" Memory Foam Mattress

Starting at

$399⁹⁹

$899⁹⁹

$500 OFF

Medium Comfort, best for

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

Stearns & Foster Lux Estate 13.5" Extra Firm Mattress

929

Starting at

$3499⁰⁰

$3899⁰⁰

$400 OFF

Extra Firm Comfort, best for

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

$300 Instant Gift⁴ with purchase of a mattress set.

Stearns & Foster Estate 13.5" Extra Firm Mattress

1092

Starting at

$2899⁰⁰

$3099⁰⁰

$200 OFF

Extra Firm Comfort, best for

Back, Stomach Sleepers
Pain
Bed Partner
Temperature
Toss and Turn

$300 Instant Gift⁴ with purchase of a mattress set.

Sierra Sleep By Ashley Chime 10" Memory Foam Mattress

241

Starting at

$394⁹⁹

$1074⁹⁹

$680 OFF

Medium Comfort, best for

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

Serta Classic Blissville 12.5" Plush Euro Top Mattress

281

Starting at

$449⁹⁹

$1199⁹⁹

$750 OFF

Plush Comfort, best for

Side Sleepers
Pain
Temperature
Bed Partner
Toss and Turn

FREE ADJUSTABLE BASE ³ with code ELEVATE

Thick mattresses generally measure 12 to 14 inches tall or more, with some extra-thick profiles reaching 16 to 20 inches. There is no universal cutoff, so the listed height is more useful than a label alone when comparing mattress thickness. A taller profile can accommodate a substantial support core, transition layers and cushioning near the surface, but height does not automatically mean better support, greater durability or a softer feel. The materials inside, their quality and the way they work together make the difference. A thick mattress can feel firm and responsive, plush and contouring, or somewhere between those extremes. Memory foam comfort layers tend to mold around the body, while latex generally has a springier feel that makes changing positions easier. Other cushioning foams can provide a softer initial touch without the same slow response as memory foam. Hybrid mattresses combine foam or latex layers with a coil support system, and some innerspring designs add a generously padded pillow top or Euro top. A pillow top typically has a visibly distinct cushion above the mattress body, while a Euro top is sewn more flush with the edges for a tailored appearance. Both can add height, although neither term guarantees a particular firmness. Beneath the surface, transition layers help ease the change from softer cushioning to the sturdier core. Coil design, foam density and the overall balance of the layers matter more than simply having the tallest mattress in the room. Even foam density and firmness describe different characteristics: a denser foam is not necessarily a firmer foam. For a shopper who loves the look of a substantial, layered bed, a thick mattress can bring that sense of depth to the bedroom while offering a range of comfort options. The best match is the one whose construction suits the sleeper, rather than the one with the greatest number of inches.

Sleeping position, body size and personal preference all influence how a thick mattress feels after the first few minutes. Side sleepers often appreciate enough cushioning for the shoulders and hips to settle in without feeling pressed against a firm surface. That cushioning still needs a supportive foundation so the middle of the body does not sink disproportionately. Back sleepers may prefer a combination that cushions the body’s curves while keeping the pelvis supported, and stomach sleepers often need a firmer surface that limits sinking around the midsection. People who change positions throughout the night may find responsive materials easier to move across than deeply conforming foams. For sleepers with larger bodies, a thick mattress with a substantial support core and durable comfort layers may offer useful room for compression, but a specific height alone cannot establish whether it will be supportive. A well-constructed lower-profile mattress can provide more reliable support than a taller mattress made with less suitable materials. For couples, thickness is only one part of the picture. Motion isolation can help reduce the disturbance from a partner turning over, while supportive edges can make the usable sleeping surface feel more consistent from side to side. Edge support also matters during ordinary moments, such as sitting down to pull on socks or pausing at the bedside before standing. Temperature deserves similar attention. More layers do not necessarily mean a warmer or cooler bed; airflow through the core, the cover fabric, how closely the surface contours and the bedding all affect comfort. Someone who sleeps warm may appreciate a breathable construction paired with lighter bedding rather than assuming a tall mattress will regulate temperature on its own. A thick mattress can suit a primary bedroom or a guest room used by adult visitors, provided its feel and finished bed height work for the people sleeping there. When choosing a mattress as a gift for a family member, involving the recipient in comfort and size decisions is especially helpful because a plush appearance does not reveal how the bed will feel to them.

Fit extends beyond choosing a twin, queen or king. Mattress thickness changes the total height of the bed, so measure the frame or foundation and add the mattress height before making a decision. A tall mattress on a high foundation can leave feet dangling when seated, while the same mattress on a lower platform may feel comfortably accessible. A practical target is a bedside height that lets the intended sleeper sit securely with feet resting on the floor and stand without an awkward climb or drop. Check how much of the headboard will remain visible, whether the nightstand will still be within comfortable reach and whether the bed frame has mattress-height limits. Bunk beds and loft beds require particular care because mattress thickness affects the protective height of the guardrails; follow the bed manufacturer’s limits rather than choosing by appearance. Adjustable bases also require a compatible mattress, since not every tall or heavily layered construction bends as intended. Sheets and protectors need attention, too. Compare fitted-sheet pocket depth with the actual mattress height, allowing for any added pad or topper so corners stay secure. For a mattress that already provides suitable support but needs a different surface feel, thick mattress toppers can add cushioning, though they also increase bed height and cannot repair a sagging support core. Everyday care helps preserve comfort: use the foundation or slat spacing specified by the mattress manufacturer, protect the surface with a properly fitted protector and follow the care label for cleaning. Avoid saturating upholstery or foam, and let any cleaned area dry fully before replacing bedding. Rotate the mattress only as recommended, and do not flip a one-sided design unless its instructions specifically allow it. Taller mattresses can be heavy and awkward to handle, so plan for help when moving or rotating them. Durable materials, appropriate support and consistent care contribute more to lasting performance than height alone, keeping the focus on a bed that fits both the room and the sleeper’s everyday routine.

What is a thick mattress? + -

A thick mattress has a taller profile than a standard mattress, often combining multiple layers such as comfort foams, memory foam, latex or coils.

What materials are used in thick mattresses? + -

Thick mattresses may include memory foam, TEMPUR-Material™, latex, quilted covers, individually wrapped coils and supportive base foams.

Are thick mattresses available in different comfort feels? + -

Yes, thick mattresses are available in a range of comfort feels, including plush, medium and firm options to suit different preferences.

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

Consider your preferred comfort feel, the mattress materials and the overall look you want for your bed. A thicker profile may include more layers for a multi-layered design.

What sheets work best with a thick mattress? + -

Deep-pocket sheets are designed to fit mattresses with taller profiles. Check the sheet package for its pocket-depth range before choosing a set.