King Mattresses With Comfort Core

King mattresses with comfort core offer an ideal blend of spacious luxury and advanced support for a restful night’s sleep. Designed to enhance your bedroom experience, these mattresses provide ample room to stretch out while delivering balanced comfort throughout the night. Whether you’re upgrading your master suite or seeking a mattress that caters to both relaxation and support, king mattresses with comfort core are a perfect choice for those who value quality rest and extra space. Explore a variety of options to find the right fit for your sleep style and preferences.

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Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

$1450⁹⁹

$2200⁹⁹

$750 OFF

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)

Beautyrest Greenwood 10.5" Firm Mattress

3331

Starting at

$520⁹⁹

$1300⁹⁹

$780 OFF

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

3046

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)

Tulo Bamboo 10" Medium Plush Green Tea Memory Foam Mattress

5265

Starting at

$890⁹⁹

Medium Comfort, best for

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

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

Purple Original Mattress

29991

Starting at

$1999⁰⁰

Medium Comfort, best for

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

Pressuresmart MF 12.5" Firm Mattress

212

Starting at

$2600⁹⁹

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)

Beautyrest BR800 12" Plush Euro Top Mattress

645

Starting at

$1400⁹⁹

Plush Comfort, best for

Side 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)

Tulo 11" Medium Firm Cooling Hybrid Mattress

198

Starting at

$1300⁹⁹

Medium Comfort, best for

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

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

Pressuresmart MF 15" Plush Euro Top Mattress

Starting at

$2400⁹⁹

Plush Comfort, best for

Side 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 13" Medium Firm Cooling Hybrid Mattress

166

Starting at

$1500⁹⁹

Medium Comfort, best for

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

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

Tempur-Pedic TEMPUR-LuxeAdapt 13" Medium Hybrid Mattress

1791

Starting at

$5399⁰⁰

Medium Comfort, best for

Back;Side;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

Purple RestorePlus 13" Soft Hybrid Mattress

1661

Starting at

$3999⁰⁰

Plush Comfort, best for

Side Sleepers
Pain;Allergies;Bed Partner;Toss and Turn;Toss and Turn
Bed Partner
Temperature

Purple RestorePlus 13" Firm Hybrid Mattress

1659

Starting at

$3999⁰⁰

Firm Comfort, best for

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

Tempur-Pedic TEMPUR-LuxeAdapt 13" Soft Mattress

1306

Starting at

$5399⁰⁰

Plush Comfort, best for

Side 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

Purple Restore 11.5" Soft Hybrid Mattress

792

Starting at

$2999⁰⁰

Plush Comfort, best for

Side Sleepers
Pain;Allergies;Bed Partner;Toss and Turn;Toss and Turn
Bed Partner
Temperature

Tulo 12" Plush Cooling Hybrid Mattress

140

Starting at

$1450⁹⁹

Plush Comfort, best for

Side Sleepers
Pain;Temperature;Allergies;Bed Partner;Toss and Turn;Toss and Turn
Pain
Bed Partner

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

Purple Restore 11.5" Firm Hybrid Mattress

794

Starting at

$2999⁰⁰

Firm Comfort, best for

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

Purple RestorePremier 13" Soft Hybrid Mattress

753

Starting at

$4699⁰⁰

Plush Comfort, best for

Side Sleepers
Pain;Temperature;Allergies;Bed Partner;Toss and Turn;Toss and Turn
Bed Partner
Temperature

Purple RestorePremier 13" Firm Hybrid Mattress

748

Starting at

$4699⁰⁰

Firm Comfort, best for

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

Stearns & Foster Estate 14.5" Medium Mattress

547

Starting at

$2599⁰⁰

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Sealy Posturepedic Elite Brenham II 16" Medium Euro Top Mattress

309

Starting at

$2699⁰⁰

Medium Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Purple RejuvenatePlus 16.5" Mattress

243

Starting at

$7499⁰⁰

Plush Comfort, best for

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

Purple Rejuvenate 15.5" Mattress

170

Starting at

$6499⁰⁰

Firm Comfort, best for

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

Pressuresmart MF Firm 15" Euro Top Mattress

103

Starting at

$2300⁹⁹

$2800⁹⁹

$500 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)

Sealy Posturepedic Ashurst II 13" Firm Mattress

Starting at

$1699⁰⁰

Firm Comfort, best for

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

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

Beauty Sleep® Midnight Dream 13.75" Plush Mattress

Starting at

$1450⁹⁹

Plush Comfort, best for

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

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

King Mattresses With Comfort Core

A king mattress with a comfort core is designed to transform the way you experience rest, blending spacious luxury with advanced support for a restorative night’s sleep. These mattresses are engineered to offer a balanced feel—plush enough to cradle the body, yet resilient at the core to maintain healthy spinal alignment. The comfort core, often comprised of specialized foams or pocketed coils, adapts to your body’s contours, relieving pressure points while preventing that “sinking” sensation that can disrupt sleep. This makes them especially well-suited for couples who value both space and individualized comfort, as the generous surface area allows each person to find their own sweet spot without disturbing the other. Whether you’re a side sleeper needing extra cushioning for your shoulders and hips, or a back sleeper seeking firmer lumbar support, a comfort core mattress in king size offers the versatility to cater to a wide range of sleeping styles and preferences.

Summer is an ideal time to rethink your sleep environment, as warmer nights can highlight the importance of proper temperature regulation and comfort layering in your mattress. King mattresses with a comfort core often incorporate breathable materials and cooling technologies, ensuring that even on the hottest July evenings, you can drift off comfortably without overheating. For families, these mattresses provide ample space for weekend morning snuggles or bedtime stories with little ones, while still maintaining the integrity of support across the bed. They also make a thoughtful and practical gift for newlyweds setting up their first home together, or for parents celebrating a milestone anniversary—offering not just a mattress, but the promise of countless restful nights ahead. If you’re upgrading your master bedroom or preparing a guest suite to welcome summer visitors, the comfort core design delivers both immediate and long-term benefits, supporting deep, uninterrupted sleep through every season.

When choosing a king mattress with a comfort core, consider the unique needs of your household and the features that matter most to you—whether it’s motion isolation for light sleepers, reinforced edges for sitting or stretching out, or hypoallergenic materials for sensitive skin. The investment in a quality comfort core mattress pays off each morning when you wake up refreshed and ache-free, ready to embrace the day. For those seeking a different feel or additional options, explore our curated selection of King Mattresses With Conforming Comfort to find the perfect match for your sleep preferences. With the right king mattress, every night becomes an opportunity to unwind, recharge, and create lasting moments of comfort in your home.