Firm Knit King Mattresses

Discover the ultimate in comfort and support with our selection of firm knit king mattresses. Perfect for those who prefer a more supportive sleep surface, these mattresses combine durability with a luxurious feel, ensuring you wake up refreshed and ready to tackle the day. Our collection features a variety of expertly crafted options designed to meet your unique sleep needs while enhancing the aesthetic of any bedroom. Explore the world of firm knit king mattresses and find the perfect match for a restful night's sleep.

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Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$2200⁹⁹

Firm Comfort, best for

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

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

Sleepy's Basic Memory Foam Firm Mattress

2651

Starting at

$300⁷⁷

$1000⁹⁹

$700 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain;Bed Partner;Temperature;Toss and Turn
Support
Temperature

Sleepy's Basic Innerspring Firm Mattress

8257

Starting at

$300⁹⁹

Firm Comfort, best for

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

Serta iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

1727

Starting at

$2400⁹⁹

$3000⁹⁹

$600 OFF

Firm Comfort, best for

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

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

Beautyrest Greenwood 10.5" Firm Mattress

3319

Starting at

$1300⁹⁹

Firm Comfort, best for

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

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

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

2757

Starting at

$1700⁹⁹

Extra Firm Comfort, best for

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

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

Beautyrest BR800 11.25" Firm Mattress

1716

Starting at

$1300⁹⁹

Firm Comfort, best for

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

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

Stearns & Foster Estate 14.5" Firm Mattress

1108

Starting at

$2799⁰⁰

$2999⁰⁰

$200 OFF

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Sealy Essentials Sudley 8.5" Firm Mattress

940

Starting at

$400⁹⁹

$1000⁹⁹

$600 OFF

Firm Comfort, best for

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

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1523

Starting at

$2000⁹⁹

Extra Firm Comfort, best for

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

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

Pressuresmart MF 12.5" Firm Mattress

203

Starting at

$1850⁹⁹

$2600⁹⁹

$750 OFF

Firm Comfort, best for

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

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

Tulo Lavender 6" Firm Memory Foam Mattress

213

Starting at

$229⁹⁹

$400⁹⁹

$171 OFF

Firm Comfort, best for

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

Sleepy's By Sealy Premium Memory Foam Mattress

161

Starting at

$1150⁹⁹

$2300⁹⁹

$1150 OFF

Medium Comfort, best for

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

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

Serta Perfect Sleeper Nurture Night 12" Firm Mattress

834

Starting at

$999⁰⁰

Firm Comfort, best for

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

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

Tulo Bamboo 6" Firm Green Tea Memory Foam Mattress

5247

Starting at

$730⁹⁹

Firm Comfort, best for

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

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

Sealy Essentials Spruce 5.5" Firm Mattress

1033

Starting at

$950⁹⁹

Firm Comfort, best for

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

Tulo 8" Firm Cooling Hybrid Mattress

Starting at

$900⁹⁹

Firm Comfort, best for

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

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

Sealy Posturepedic Plus Hybrid High Point 14" Firm Mattress

3766

Starting at

$1450⁷⁷

$2899⁰⁰

$1449 OFF

Firm Comfort, best for

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

Tempur-Pedic TEMPUR-ProAdapt 12" Firm Mattress

3649

Starting at

$4099⁰⁰

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Beautyrest Black Series Three 15" Firm Mattress

1578

Starting at

$4099⁰⁰

$4499⁰⁰

$400 OFF

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Beautyrest PressureSmart 2.0 Hybrid Firm 13" Mattress

1077

Starting at

$1700⁹⁹

$2950⁹⁹

$1250 OFF

Firm Comfort, best for

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

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

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Mattress

1025

Starting at

$5399⁰⁰

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase + Calm app 3-month free trial

Serta Perfect Sleeper Sleep Excellence Extra Firm Mattress

755

Starting at

$2000⁹⁹

Extra Firm Comfort, best for

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

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

Sleepy's By Sealy Slumber Firm Mattress

516

Starting at

$1700⁹⁹

Firm Comfort, best for

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

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

Serta Perfect Sleeper Pacific Peace 12" Hybrid Firm Mattress

203

Starting at

$1399⁰⁰

Firm Comfort, best for

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

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

Chattam & Wells Pierrefonds 16" Firm Euro Top Mattress

Starting at

$7200⁹⁹

$8100⁹⁹

$900 OFF

Firm Comfort, best for

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

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

Firm Knit King Mattresses

When considering the purchase of a firm knit king mattress, it’s essential to understand the unique blend of comfort and support these products offer. Ideal for those who prefer a solid sleeping surface, firm knit king mattresses are designed to provide an optimal balance between rigidity and cushioning, making them a popular choice for individuals with back pain or those who simply enjoy a sturdier bed. The king size offers ample space, ensuring that each sleeper can enjoy an undisturbed rest, even if sharing the bed. As the seasons shift and the cool embrace of spring approaches, the breathable nature of knit fabrics becomes increasingly valuable, promoting air circulation and helping to regulate body temperature throughout the night.

For many, the decision to invest in a firm knit king mattress is influenced by the promise of improved sleep quality and the luxurious expanse of a king-sized bed. These mattresses are particularly suited to couples, offering enough room to accommodate various sleeping positions without the risk of disturbing one another. The firm support is also beneficial for those who spend a lot of time sitting or standing throughout the day, as it helps to align the spine and relieve pressure points. Additionally, a firm knit mattress can be a thoughtful gift for significant life events such as weddings or housewarming parties, providing the recipient with a foundation for countless nights of restorative sleep. The tactile comfort of the knit fabric, combined with the robust support of a firm mattress, can significantly enhance the bedroom environment, turning it into a sanctuary for relaxation and rejuvenation.

While exploring options, it may also be beneficial to consider the broader range of firm mattresses available. For those interested in traditional designs that prioritize durability and classic comfort, exploring our selection of Firm Classic Mattresses might reveal the perfect match for your sleeping needs. Whether upgrading your own sleeping setup or choosing a thoughtful gift for a loved one, the right firm mattress can dramatically improve the quality of sleep and, by extension, the quality of life. As you browse, remember that the best mattress should align with your personal sleep preferences, lifestyle, and health requirements, ensuring every night’s sleep is peacefully perfect.