Core Support King Mattresses

Discover the perfect blend of comfort and stability with our selection of core support king mattresses, designed to elevate your sleep experience. Whether you're seeking enhanced durability or a restful night's sleep, these king-sized options cater to those who value both luxury and support. Ideal for couples or individuals who enjoy extra space, our core support king mattresses provide an inviting retreat after a long day. Explore our range to find the mattress that complements your lifestyle and transforms your bedroom into a sanctuary of relaxation.

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Sleepy's Basic Hybrid Mattress

1473

Starting at

$600⁹⁹

Medium Comfort, best for

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

Queen mattress & base now $499 with code ELEVATE (must add base to cart)

Beautyrest Greenwood 10.5" Firm Mattress

3153

Starting at

$1300⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Toss and Turn

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

Serta iSeries 2.0 Hybrid 3000 13.5" Medium Mattress

706

Starting at

$2900⁹⁹

$3500⁹⁹

$600 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 13.5" Plush Pillow Top Mattress

2355

Starting at

$672⁹⁹

$1500⁹⁹

$828 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

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

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

2608

Starting at

$710⁹⁹

$1700⁹⁹

$990 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

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

Beautyrest BR800 11.25" Firm Mattress

1632

Starting at

$615⁹⁹

$1300⁹⁹

$685 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Toss and Turn
Pain
Bed Partner

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

Beautyrest BR800 12" Medium Mattress

2820

Starting at

$559⁹⁹

$1300⁹⁹

$741 OFF

Medium Comfort, best for

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

72 hour sale ends Monday!

Stearns & Foster Estate 14.5" Firm Mattress

955

Starting at

$2799⁰⁰

$2999⁰⁰

$200 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Serta Perfect Sleeper Sleep Excellence Plush Mattress

613

Starting at

$1700⁹⁹

Plush Comfort, best for

Side Sleepers
Pain
Toss and Turn
Pain

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

Sealy Essentials Sudley 8.5" Firm Mattress

910

Starting at

$400⁹⁹

$1000⁹⁹

$600 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1498

Starting at

$672⁹⁹

$1500⁹⁹

$828 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)

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

1435

Starting at

$855⁹⁹

$2000⁹⁹

$1145 OFF

Extra Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
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

1392

Starting at

$800⁹⁹

$1000⁹⁹

$200 OFF

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

26715

Starting at

$1499⁰⁰

$1999⁰⁰

$500 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Temperature
Allergies

Pressuresmart MF 12.5" Firm Mattress

144

Starting at

$1250⁹⁹

$2000⁹⁹

$750 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

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

Beautyrest BR800 12" Plush Euro Top Mattress

577

Starting at

$590⁹⁹

$1400⁹⁹

$810 OFF

Plush Comfort, best for

Side Sleepers
Toss and Turn
Pain
Bed Partner

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

Sleepy's By Sealy Premium Memory Foam Mattress

122

Starting at

$1150⁹⁹

$2300⁹⁹

$1150 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
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

769

Starting at

$800⁹⁹

$999⁰⁰

$199 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

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

Beautyrest Silver BRS900 12" Plush Mattress

719

Starting at

$730⁹⁹

$1700⁹⁹

$970 OFF

Plush Comfort, best for

Side Sleepers
Bed Partner
Pain
Temperature

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

Nectar Classic 12" Firm Memory Foam Mattress

102

Starting at

$849⁰⁰

$1399⁰⁰

$550 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

Tulo 12" Medium Firm Cooling Hybrid Mattress

134

Starting at

$567⁹⁹

$1450⁹⁹

$883 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Serta Perfect Sleeper Oasis Sleep 14.5" Pillow Top Mattress

676

Starting at

$1078⁹⁹

$1399⁰⁰

$321 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Bed Partner
Temperature

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

Tulo 11" Medium Firm Cooling Hybrid Mattress

196

Starting at

$492⁹⁹

$1300⁹⁹

$808 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Serta Perfect Sleeper Nurture Night 13.5" Plush Mattress

586

Starting at

$879²⁰

$1099⁰⁰

$220 OFF

Plush Comfort, best for

Side Sleepers
Pain
Bed Partner
Temperature

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

Zinus Green Tea 10 Cushioned Firm Memory Foam Mattress

1061

Starting at

$439⁰⁰

$860⁹⁹

$421 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Temperature

Tulo 13" Medium Firm Cooling Hybrid Mattress

157

Starting at

$562⁹⁹

$1500⁹⁹

$938 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Core Support King Mattresses

When it comes to creating a restful haven in your bedroom, the right king mattress can make all the difference—especially if you’re looking for robust, all-night support. Core support king mattresses are designed with a focus on stability, durability, and balanced comfort, making them a reliable foundation for restorative sleep. These mattresses are particularly well-suited for couples, families with young children who occasionally climb into bed, or anyone who simply enjoys the luxury of extra space to stretch out. As summer settles in and daylight lingers into the evening, a supportive king mattress can become the centerpiece of your nightly wind-down routine, offering a cool, comfortable place to relax after busy days. The generous dimensions of a king mattress are ideal for those who share their bed and want to minimize motion transfer, or for individuals who love to sprawl out with a good book, their favorite summer playlist, and perhaps even a furry companion at their feet.

Selecting the right core support king mattress involves considering a variety of factors to ensure it meets your unique needs. If you or your partner deal with back discomfort, a mattress with targeted core support can help maintain proper spinal alignment and alleviate pressure points, contributing to more restful, uninterrupted sleep. For hot sleepers, many core support king mattresses are engineered with breathable materials and cooling technologies, making them especially appealing during the warmer months. If you’re outfitting a master bedroom or upgrading your guest room for summer visitors, a king mattress with reinforced support can accommodate a range of body types and sleep positions, ensuring that everyone who uses it enjoys consistent comfort. These mattresses also make thoughtful gifts for newlyweds setting up a new home, parents celebrating a milestone anniversary, or anyone embarking on a fresh chapter in life—offering both practicality and a touch of everyday luxury. The durability of a core support king mattress means it can stand up to years of nightly use, making it a wise investment for households that value quality and longevity in their sleep essentials.

Whether you’re seeking relief from restless nights or simply want to elevate your sleep experience, core support king mattresses provide the solid foundation you need for a healthier, more rejuvenating rest. Their versatile construction makes them suitable for a wide range of sleepers, from those who prefer a firmer feel to those who want a balance of cushioning and support. As you browse the options, think about your sleep habits, room size, and long-term comfort goals. For more detailed information about the features and benefits of core support mattresses in all sizes, you can explore our dedicated page at Core Support Mattresses. Investing in the right mattress can transform not just your sleep, but your entire approach to relaxation and self-care—making every night feel like a retreat, no matter the season.