King Size Sleep Number Bed

Experience the ultimate in spacious comfort with a King Size Sleep Number Bed, designed to elevate your bedroom and support restful nights. Perfect for couples or anyone who enjoys extra room to stretch out, these beds offer a luxurious sleep surface that complements any style of décor. Explore options that blend innovative technology with plush comfort, making it easy to find the ideal King Size Sleep Number Bed for your unique sleep preferences. Discover how upgrading to a king size can transform your nightly routine and create a sanctuary for relaxation.

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Beautyrest PressureSmart 2.0 Lux Plush Pillow Top 16.5" Mattress

520

Starting at

$3250⁹⁹

Plush Comfort, best for

Side 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)

Sleepy's By Sealy Slumber Medium Mattress

131

Starting at

$2300⁹⁹

Medium Comfort, best for

Back;Side;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)

Sleepy's By Sealy Memory Foam Medium Mattress

2977

Starting at

$470⁹⁹

Medium Comfort, best for

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

Sleepy's Basic Memory Foam Firm Mattress

2701

Starting at

$300⁷⁷

$1000⁹⁹

$700 OFF

Firm Comfort, best for

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

Tempur-Pedic TEMPUR-Ergo Smart Adjustable Base

725

Starting at

$2699⁰⁰

Calm app 3-month free trial with mattress purchase & registration

Sleepy's Elite Adjustable Base

860

Starting at

$1900⁹⁹

Save up to 499 with qualifying mattress purchase. Code: ELEVATE

Tempur-Pedic TEMPUR-Adapt 11" Medium Mattress

3144

Starting at

$2899⁰⁰

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

Tempur-Pedic TEMPUR-LuxeAdapt 13" Firm Mattress

1268

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

Sleepy's By Sealy Spring Firm Mattress

934

Starting at

$1850⁹⁹

Firm Comfort, best for

Back;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)

Sealy Posturepedic Elite Hybrid High Point II 14" Medium Mattress

826

Starting at

$2999⁰⁰

Medium Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Tempur-Pedic TEMPUR-ProBreeze Medium 12" Mattress

358

Starting at

$5099⁰⁰

Medium Comfort, best for

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

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

Sealy Posturepedic Elite Brenham II 15" Medium Mattress

240

Starting at

$2499⁰⁰

Medium Comfort, best for

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

Receive $200 Instant Gift⁴ with purchase.

Beautyrest Black Series Four 17.5" Firm Summit Pillow Top Mattress

192

Starting at

$6199⁰⁰

Firm Comfort, best for

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

$300 ⁶ adjustable base instant gift with purchase.

Pressuresmart MF 13" Plush Mattress

108

Starting at

$2000⁹⁹

$2750⁹⁹

$750 OFF

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)

Beautyrest Black Hybrid Series Four 16" Plush Apex Top Mattress

Starting at

$6199⁰⁰

Plush Comfort,

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

$300 ⁶ adjustable base instant gift with purchase.

Stearns & Foster Reserve Duet 17" Firm Euro Pillow Top Mattress

Starting at

$7099⁰⁰

Firm Comfort, best for

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

Receive $300 Instant Gift⁴ with purchase.

Sealy Posturepedic Plus Norman II 14" Medium Mattress

Starting at

$1899⁰⁰

Medium Comfort, best for

Back;Side;Stomach 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)

Sealy Posturepedic Pro Lacey II 14" Medium Mattress

Starting at

$2299⁰⁰

Medium Comfort, best for

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

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

Sleepy's Basic Adjustable Base

Starting at

$500⁹⁹

FREE with select mattress purchase³.

Sleepy's Basic Innerspring Firm Mattress

8308

Starting at

$300⁹⁹

Firm Comfort, best for

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

Beautyrest BR800 13.5" Plush Pillow Top Mattress

2564

Starting at

$1500⁹⁹

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)

Sleepy's By Sealy Slumber Cushion Firm Mattress

247

Starting at

$2000⁹⁹

Medium Comfort, best for

Back;Side;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)

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)

Sealy Essentials Winter Green 12" Medium Euro Top Mattress

596

Starting at

$1380⁹⁹

Medium Comfort, best for

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

Beautyrest Silver BRS900 12" Plush Mattress

973

Starting at

$1700⁹⁹

Plush Comfort, best for

Side 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)

Reverie Split Top Adjustable Base

106

Starting at

$1799⁰⁰

King Size Sleep Number Bed

A king size adjustable air bed brings a new level of customization and spacious comfort to the bedroom, making it an ideal choice for couples, families, or anyone who values a personalized sleep experience. These beds are designed with dual adjustability in mind, allowing each side of the mattress to be tailored to individual comfort preferences—whether you prefer a plush, cloud-like feel or a firmer, more supportive surface. This customization is especially beneficial for partners with different sleep needs, as it means both people can enjoy a restful night without compromise. The generous dimensions of a king size bed also provide ample space to stretch out, making it perfect for sprawling sleepers, parents sharing the bed with a child, or even pet owners whose furry friends like to snuggle in. As the nights grow cooler in September and the air turns crisp, having extra room to layer on cozy bedding or pile up with loved ones becomes even more inviting.

When considering a king size adjustable air bed, there are several factors to weigh to ensure you find the right fit for your home and lifestyle. First, think about the adjustability features—some models offer remote controls, app integration, or even sleep tracking technology, which can enhance your nightly routine and help you find your ideal comfort setting. If you suffer from back pain, joint issues, or simply want to improve your sleep quality, the ability to fine-tune firmness can make a significant difference. These beds are also a thoughtful gift for newlyweds, parents, or anyone setting up a new home, as they offer both luxury and practicality. The versatility of a king size bed means it can serve as a sanctuary for relaxation, a space for reading or watching movies on chilly autumn evenings, or even a supportive surface for those recovering from illness or surgery. For those wondering, “does mattress firm sell sleep number beds,” it’s important to explore the full range of adjustable air beds available, as Mattress Firm offers a wide selection of comparable options designed to deliver comfort and quality.

Shopping for a king size adjustable air bed is about more than just size—it’s about investing in your well-being and creating a restful environment tailored to your needs. Consider the materials used in the mattress, such as cooling gel layers for temperature regulation or hypoallergenic fabrics for sensitive sleepers. The foundation and support system are just as important; a sturdy base ensures long-lasting performance and can even improve the overall feel of the mattress. If you’re upgrading your bedroom this season, pairing your new bed with soft, breathable linens and supportive pillows can transform your space into a true retreat. Whether you’re outfitting a master suite or preparing a guest room for holiday visitors, a king size adjustable air bed offers both flexibility and indulgence. For those looking to explore even more premium options, browse our curated collection of King Size Luxury Mattresses to discover the ultimate in comfort and craftsmanship. With the right mattress, every night can feel like a getaway, and every morning starts with renewed energy and comfort.