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.

Sort & Filter

Sleepy's Basic Hybrid Mattress

1554

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)

Serta Perfect Sleeper Charlotte 2.0 Medium Euro Top Mattress

2383

Starting at

$550⁹⁹

$1500⁹⁹

$950 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Toss and Turn
Pain

72 hour sale ends Monday!

Beautyrest Greenwood 10.5" Firm Mattress

3212

Starting at

$520⁹⁹

$1300⁹⁹

$780 OFF

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 Perfect Sleeper Sleep Excellence Medium PillowTop Mattress

1183

Starting at

$2000⁹⁹

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Toss and Turn
Pain

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

732

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

2431

Starting at

$800⁹⁹

$1500⁹⁹

$700 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

2675

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

1667

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)

Stearns & Foster Estate 14.5" Firm Mattress

1029

Starting at

$2999⁰⁰

Firm Comfort, best for

Back;Stomach Sleepers
Bed Partner
Pain
Temperature

Receive $300 Instant Gift⁴ with purchase.

Serta Perfect Sleeper Sleep Excellence Plush Mattress

663

Starting at

$1100⁹⁹

$1700⁹⁹

$600 OFF

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

927

Starting at

$1000⁹⁹

Firm Comfort, best for

Back;Stomach Sleepers
Pain

Beautyrest BR800 13.5" Medium Pillow Top Mattress

1561

Starting at

$800⁹⁹

$1500⁹⁹

$700 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

1473

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

1427

Starting at

$1000⁹⁹

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

26746

Starting at

$1999⁰⁰

Medium Comfort, best for

Back;Side;Stomach Sleepers
Pain
Temperature
Allergies

Pressuresmart MF 12.5" Firm Mattress

175

Starting at

$2200⁹⁹

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)

Sleepy's By Sealy Slumber Cushion Firm Mattress

227

Starting at

$2000⁹⁹

Medium Comfort, best for

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

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

Beautyrest BR800 12" Plush Euro Top Mattress

586

Starting at

$570⁹⁹

$1400⁹⁹

$830 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

139

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

800

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

759

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)

Serta Perfect Sleeper Nurture Night 14.5" Pillow Top Mattress

765

Starting at

$917⁹⁹

$1249⁰⁰

$332 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)

Nectar Classic 12" Firm Memory Foam Mattress

116

Starting at

$849⁰⁰

$1399⁰⁰

$550 OFF

Firm Comfort, best for

Back;Stomach Sleepers
Pain
Bed Partner
Temperature

Tulo 12" Medium Firm Cooling Hybrid Mattress

139

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

696

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

197

Starting at

$492⁹⁹

$1300⁹⁹

$808 OFF

Medium Comfort, best for

Back;Side;Stomach Sleepers
Temperature
Pain
Bed Partner

Core Support King Mattresses

Choosing a king-size mattress with core support is a thoughtful investment in long-term comfort, especially for couples, families, or anyone who values extra space and reliable support. King mattresses offer a generous sleeping surface, making them ideal for master bedrooms or for those who simply enjoy stretching out at night. The core support feature, often found in the latest mattress designs, provides enhanced stability and alignment, which can be especially beneficial for individuals who experience back pain, joint discomfort, or restless sleep. These mattresses are engineered to distribute weight evenly, reduce motion transfer, and maintain their structure over years of nightly use. As summer brings longer days and warmer nights, a core support king mattress can also help regulate temperature and promote airflow, ensuring restful sleep even during the hottest months. Imagine coming home after a busy July day, sinking into a supportive yet plush mattress, and feeling the day’s stresses melt away as you settle into a cool, comfortable bed.

Core support king mattresses are not only a practical choice for personal use but also make a memorable and meaningful gift. Whether you’re celebrating a wedding, a housewarming, or a milestone anniversary, gifting a high-quality king mattress can transform a loved one’s sleep experience and show how much you care about their well-being. Parents upgrading to a larger bed, couples moving into a new home, or even adult children looking to provide a comfortable guest room for visiting family will appreciate the thoughtful consideration behind such a gift. These mattresses are designed to accommodate a variety of sleeping positions and body types, making them a versatile solution for households with different needs. The spacious surface allows for children or pets to join in for weekend mornings filled with laughter, stories, and breakfast in bed. With the right mattress, these everyday moments become cherished memories, all supported by the stability and comfort of a well-constructed core.

When browsing for the ideal king mattress, consider factors such as firmness level, material composition, and the unique needs of those who will use it. Some individuals prefer a firmer feel for added lumbar support, while others may enjoy a bit of plushness for pressure relief at the shoulders and hips. Advanced core support systems can include pocketed coils, high-density foam layers, or hybrid constructions that blend the best of both worlds. During the summer months, features like cooling gels or breathable covers can make a significant difference in overnight comfort. For those interested in exploring the full range of supportive options, the Core Support Mattresses collection offers a variety of king-size models designed to meet diverse preferences and sleeping styles. Investing in a mattress that prioritizes core support is a step toward healthier sleep, greater relaxation, and a bedroom environment that feels like a true retreat every night of the year.