Size of King

Experience the spacious comfort that comes with the Size of King. Perfect for those who value extra room to stretch out or share, king size mattresses offer an ideal solution for restful nights and luxurious relaxation. Explore a wide selection designed to complement any bedroom style while providing the generous dimensions you need for a truly comfortable sleep environment. Discover how upgrading to the Size of King can transform your nightly routine into a haven of relaxation and space.

Show More

Sort & Filter

Basic Adjustable Base

Sleepy's Basic Adjustable Base

Starting at

FREE with select mattress purchase³.

By Sealy Memory Foam Medium Mattress

Sleepy's By Sealy Memory Foam Medium Mattress

Starting at

Medium Comfort, best for

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

PressureSmart 2.0 Firm 11" Mattress

Beautyrest PressureSmart 2.0 Firm 11" Mattress

Starting at

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)

Basic Innerspring Firm Mattress

Sleepy's Basic Innerspring Firm Mattress

Starting at

Firm Comfort, best for

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

Signature Gel Memory Foam Pillow

Sleepy's Signature Gel Memory Foam Pillow

Starting at

Firm Comfort, best for

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

Save $100 when you bundle¹⁰. Use Code: SIGNATURE

By Sealy Medium Euro Top Mattress

Sleepy's By Sealy Medium Euro Top Mattress

Starting at

Medium Comfort, best for

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

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

Deluxe Charcoal Cool Pillow

Sleepy's Deluxe Charcoal Cool Pillow

Starting at

Soft Comfort, best for

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

Save $150 when you bundle¹⁰. Use Code: DELUXE

TEMPUR-Protect Breeze Mattress Protector

Tempur-Pedic TEMPUR-Protect Breeze Mattress Protector

Starting at

iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

Serta iSeries 2.0 Hybrid 2000 12.5" Firm Mattress

Starting at

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)

Heavy Duty Raised Metal Platform Frame

Sleepy's Heavy Duty Raised Metal Platform Frame

Starting at

TEMPUR-Adapt 1.0 11" Medium Mattress

Tempur-Pedic TEMPUR-Adapt 1.0 11" Medium Mattress

Starting at

Medium Comfort, best for

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

BR800 13.5" Plush Pillow Top Mattress

Beautyrest BR800 13.5" Plush Pillow Top Mattress

Starting at

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)

Silver BRS900 11.75" Extra Firm Mattress

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

Starting at

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)

BR800 11.25" Firm Mattress

Beautyrest BR800 11.25" Firm Mattress

Starting at

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)

Essentials Sudley 8.5" Firm Mattress

Sealy Essentials Sudley 8.5" Firm Mattress

Starting at

Firm Comfort, best for

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

Bamboo 10" Medium Plush Green Tea Memory Foam Mattress

Tulo Bamboo 10" Medium Plush Green Tea Memory Foam Mattress

Starting at

Medium Comfort, best for

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

Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

Tulo Bamboo 12" Medium Plush Green Tea Memory Foam Mattress

Starting at

Medium Comfort, best for

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

BR800 13.5" Medium Pillow Top Mattress

Beautyrest BR800 13.5" Medium Pillow Top Mattress

Starting at

Medium Comfort, best for

Back;Side;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)

Silver BRS900-C 13.75" Extra Firm Mattress

Beautyrest Silver BRS900-C 13.75" Extra Firm Mattress

Starting at

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)

Lavender 10" Medium Plush Memory Foam Mattress

Tulo Lavender 10" Medium Plush Memory Foam Mattress

Starting at

Medium Comfort, best for

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

Dri-Tec Mattress Protector

Bedgear Dri-Tec Mattress Protector

Starting at

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

Bamboo 8" Medium Green Tea Memory Foam Mattress

Tulo Bamboo 8" Medium Green Tea Memory Foam Mattress

Starting at

Medium Comfort, best for

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

Silver BRS900 11.75" Medium Firm Mattress

Beautyrest Silver BRS900 11.75" Medium Firm Mattress

Starting at

Medium Comfort, best for

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

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

Original Mattress

Purple Original Mattress

Starting at

Medium Comfort, best for

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

BR800 12" Plush Euro Top Mattress

Beautyrest BR800 12" Plush Euro Top Mattress

Starting at

Plush Comfort, best for

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

Lux Estate Elite 16" Medium Euro Pillow Top Mattress

Stearns & Foster Lux Estate Elite 16" Medium Euro Pillow Top Mattress

Starting at

Medium Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Related Pages

Best Sellers

TEMPUR-Protect Breeze Mattress Protector

Tempur-Pedic TEMPUR-Protect Breeze Mattress Protector

Starting at

BR800 13.5" Plush Pillow Top Mattress

Beautyrest BR800 13.5" Plush Pillow Top Mattress

Starting at

Silver BRS900 11.75" Extra Firm Mattress

Beautyrest Silver BRS900 11.75" Extra Firm Mattress

Starting at

BR800 11.25" Firm Mattress

Beautyrest BR800 11.25" Firm Mattress

Starting at

Bamboo 10" Medium Plush Green Tea Memory Foam Mattress

Tulo Bamboo 10" Medium Plush Green Tea Memory Foam Mattress

Starting at

Top Collections

Join today & enjoy an extra 15% off online or in-store

Loading footer...