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King Mattresses

King size mattresses and king size beds offer more sleeping space . Check our selection of king size beds for sale in-stores or online today at Sit ‘N Sleep.

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King Mattresses

224 Items
224 Items

$300 Instant Gift

Medium

TEMPUR-Adapt Medium 2.0

from $1,699.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Golden Elegance Fortuna Soft

from $659.99

$459.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Kingsdown Mode Plush Euro Top

from $1,129.99

$729.99

Soft

Serta Perfect Sleeper Morro Bay Plush Pillow Top

from $899.99

get it Delivery date contingent on available inventory

Free Gift With Purchase

Firm

Purple RestorePremier Firm

from $3,249.00

get it Delivery date contingent on available inventory

On Sale

Soft

Cool Encore Elite Mattress

from $1,599.99

$1,399.99

get it Delivery date contingent on available inventory

Soft

Stearns & Foster Lux Estate – Soft Euro Pillow Top

from $3,199.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Rosewood Medium Euro Top

from $1,399.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Kingsdown Tenderness Plush

from $999.99

$649.99

On Sale

Medium

Craftsman Medium Euro Top

from $1,049.99

$549.99

get it Delivery date contingent on available inventory

Medium

Avocado Green Euro Pillow Top Mattress

from $2,099.00

get it Delivery date contingent on available inventory

On Sale

Firm

Helix Premier Firm Euro Top

from $1,998.75

$1,599.00

get it Delivery date contingent on available inventory

On Sale

Firm

Helix Twilight Luxe Firm Euro Top

from $1,373.33

$1,099.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Golden Elegance Sunnyvale Medium

from $984.99

$584.99

$300 Instant Gift

Medium

TEMPUR-LuxeAdapt Medium Hybrid 2.0

from $3,799.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Blissful Excellence Hastings Hybrid Firm

from $1,399.00

$499.00

Online Only Sale

Firm

Serta Blissful Excellence Delani Meadows Firm

from $749.00

$449.00

Online Only Sale

Soft

Kingsdown Nuovo Plush Euro Top

from $799.99

$499.99

Soft

Serta Perfect Sleeper Pacific Palisades Plush Pillow Top

from $1,299.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Orion Pillow Top

from $959.99

$459.99

$300 Instant Gift

Firm

Tempur-LuxeBreeze Firm 2.0

from $5,099.00

get it Delivery date contingent on available inventory

Free Gift With Purchase

Firm

Purple Restore Firm

from $1,999.00

get it Delivery date contingent on available inventory

Free Gift With Purchase

Soft

Purple Restore Soft

from $1,999.00

Extra Firm

Stearns & Foster Estate – Ultra Firm Tight Top

from $2,299.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Duet Plush

from $1,099.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

TEMPUR - LuxeAdapt Soft Mattress

from $3,699.00

$2,589.30

get it Delivery date contingent on available inventory

Firm

Beautyrest Black Series Two Firm

from $2,349.99

get it Delivery date contingent on available inventory

Soft

Avocado Green Box Top Mattress

from $2,899.00

get it Delivery date contingent on available inventory

On Sale

Medium Soft

Casper Snow Max Hybrid

from $3,145.00

$2,495.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

TEMPUR-LuxeAdapt Soft 2.0

from $3,799.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Serta Blissful Excellence Hastings Hybrid Medium

from $1,399.00

$599.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Kingsdown Mode Firm Euro Top

from $1,129.99

$729.99

Online Only Sale

Soft

Kingsdown Mode Hybrid Plush

from $1,059.99

$659.99

Medium

King Koil Xtended Life Onyx Hybrid

from $2,499.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Beautyrest Driftwood Bay Hybrid Plush

from $1,499.99

$899.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Beautyrest Cypress Bay Medium

from $1,499.99

$899.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Perfect Sleeper La Jolla Plush

from $899.99

$599.99

Online Only Sale

Soft

Orion Plush

from $819.99

$419.99

$300 Instant Gift

Medium

Tempur-LuxeBreeze Medium Hybrid 2.0

from $5,099.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Laurel Plush Euro Top

from $1,499.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

TEMPUR - ProAdapt Medium Hybrid Mattress

from $2,899.00

$2,029.30

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Golden Spirits Medium Tight Top

from $784.00

$609.00

Online Only Sale

Soft

Sealy Dream Waves Soft Euro Pillow Top

from $674.00

$499.00

Medium

Beautyrest Black Series Three Hybrid Medium

from $3,449.99

get it Delivery date contingent on available inventory

On Sale

Soft

Nectar Foam Ultra 5.1

from $1,799.00

$1,299.00

get it Delivery date contingent on available inventory

Medium

King Koil PureBliss Sanctuary Medium

from $2,299.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Soft

TEMPUR-ProAdapt Soft 2.0

from $2,899.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Medium

TEMPUR-Adapt Medium Hybrid 2.0

from $1,999.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Golden Elegance Fiji Palms Soft

from $899.99

$599.99

Online Only Sale

Firm

Sealy Golden Elegance Fiji Palms Firm

from $899.99

$599.99

Online Only Sale

Firm

Kingsdown Mode Hybrid Firm

from $1,059.99

$659.99

Firm

Technogel Armonia III

from $3,124.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Posturepedic Abbey Beach Soft Fx Euro Top

from $1,174.99

$774.99

Extra Firm

King Koil Xtended Life Onyx Extra Firm

from $2,499.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Perfect Sleeper La Jolla Plush Euro Top

from $1,099.99

$699.99

Online Only Sale

Medium

Stearns & Foster Studio – Medium Tight Top

from $1,699.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Orion Firm

from $789.99

$389.99

Firm

King Koil Otto Ultra Firm

from $2,099.99

get it Delivery date contingent on available inventory

Medium Firm

Stearns & Foster Reserve – Firm Euro Pillow Top

from $5,199.00

get it Delivery date contingent on available inventory

Medium

Stearns & Foster Reserve – Medium

from $4,499.00

get it Delivery date contingent on available inventory

Firm

King Koil Avery Firm

from $5,799.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Golden Spirits Soft Euro Pillow Top

from $884.00

$709.00

Online Only Sale

Soft

Sealy Golden Spirits Soft Tight Top

from $784.00

$609.00

Online Only Sale

Soft

Sealy Dream Waves Soft Tight Top

from $584.00

$409.00

Soft

Beautyrest Black Series Four Hybrid Plush Apex Top

from $4,349.99

get it Delivery date contingent on available inventory

Medium

Beautyrest Black Series Two Hybrid Medium Apex Top

from $2,849.99

get it Delivery date contingent on available inventory

Soft

Beautyrest Black Series Two Hybrid Plush

from $2,549.99

get it Delivery date contingent on available inventory

Firm

Beautyrest Black Series Three Firm Pillow Top

from $3,449.99

get it Delivery date contingent on available inventory

Medium

Beautyrest Black Series Two Medium Pillow Top

from $2,549.99

get it Delivery date contingent on available inventory

Soft

Beautyrest Black Series One Plush Pillow Top

from $2,149.99

get it Delivery date contingent on available inventory

On Sale

Soft

Sealy Cliff Rose Plush Euro Pillow Top Matttress

from $1,394.99

$805.77

get it Delivery date contingent on available inventory

Online Only

Medium

Avocado Eco Kids Mattress

from $649.00

On Sale

Soft

Avocado Luxury Organic Mattress

from $3,799.00

$3,419.00

get it Delivery date contingent on available inventory

On Sale

Medium Soft

Casper Dream Max Hybrid

from $2,495.00

$1,995.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Medium Firm

TEMPUR-ActiveBreeze® Smart Bed

from $9,298.00

get it Delivery date contingent on available inventory

Soft

King Koil Smartlife Lotus 2.0

from $4,899.99

get it Delivery date contingent on available inventory

Medium

King Koil Smartlife Lily 2.0

from $4,399.99

get it Delivery date contingent on available inventory

Firm

King Koil Smartlife Ivy 2.0

from $4,399.99

get it Delivery date contingent on available inventory

Firm

King Koil PureBliss Sanctuary Firm

from $2,099.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Golden Elegance C Bay Soft

from $1,384.99

$884.99

Online Only Sale

Firm

Sealy Golden Elegance C Bay Ultra Firm

from $1,384.99

$884.99

Online Only Sale

Soft

Sealy Golden Elegance Ella Bay Soft Euro Pillow Top

from $1,184.99

$784.99

Online Only Sale

Soft

Sealy Golden Elegance Ella Bay Soft

from $1,084.99

$684.99

Online Only Sale

Firm

Sealy Golden Elegance Ella Bay Firm

from $1,084.99

$684.99

Online Only Sale

Firm

Sealy Golden Elegance Hybrid Palms Firm

from $874.99

$574.99

Online Only Sale

Medium

Sealy Golden Elegance Aris Medium

from $1,184.99

$784.99

$300 Instant Gift

Medium

TEMPUR-ProAdapt Medium Hybrid 2.0

from $2,899.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Medium

TEMPUR-ProAdapt Medium 2.0

from $2,899.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Golden Elegance Fiji Palms Soft Euro Pillow Top

from $924.99

$624.99

Online Only Sale

Soft

Serta Blissful Excellence Hastings Hybrid Plush

from $1,499.00

$699.00

Online Only Sale

Firm

Serta Blissful Excellence Finleyville Firm Pillow Top

from $1,499.00

$999.00

Online Only Sale

Medium

Serta Blissful Excellence Finleyville Medium

from $1,399.00

$714.77

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Blissful Excellence Finleyville Firm

from $1,399.00

$899.00

Online Only Sale

Soft

Serta Blissful Excellence Enchanting Skies Plush Pillow Top

from $1,099.00

$659.00

Online Only Sale

Soft

Serta Blissful Excellence Enchanting Skies Plush

from $999.00

$609.00

Online Only Sale

Soft

Serta Blissful Excellence Delani Meadows Plush

from $749.00

$449.00

Online Only Sale

Soft

Kingsdown Mode Plush

from $879.99

$579.99

Online Only Sale

Firm

Kingsdown Mode Firm

from $879.99

$579.99

Soft

Cloudtech Cirrus Smooth Top Plush

from $2,199.99

get it Delivery date contingent on available inventory

Firm

Cloudtech Cirrus Smooth Top Firm

from $2,199.99

get it Delivery date contingent on available inventory

About King Mattresses

Why do so many people like king beds? Because they offer more of everything—more space, more comfort, more luxury. And you can get the most out of a king size bed with the right mattress. You’ll find the perfect mattress when you shop at Sit ‘n Sleep. 

With our wide-ranging selection, you get to choose among the best mattresses from big-name brands like Hybrid Infinity, Purple, Beautyrest, Sealy, and more. Our expert consultants can talk about what type of mattress meets your specifications—and your budget—so you know you’re in good hands when you want to create a sleep space for a good night’s sleep.

What Is a King Size Mattress?

A king mattress is generously sized. It measures 76” wide and 80” long. At more than 6 feet long in both width and length, the king can comfortably accommodate many body types, even when a bed is shared.

Who Is a King Size Mattress For?

Because king size mattresses are so large, they are popular for people who are tall or larger in size who want to sleep comfortably without feeling cramped. A mattress that is king size is also a good choice if you share a bed with a partner and you both tend to move around while sleeping, or if you and your partner often have pets and kids climbing into bed to snuggle with you.

Keep in mind that you should have a bedroom big enough to fit a king bed, with enough space for you to move around the room or get into bed without bumping into walls or your furniture. And it’s worth noting that king mattresses typically cost more than smaller twin, full, or queen sizes.

King Mattress or California King Mattress?

If you’re considering a king size mattress, you also may be wondering if you should get a California king instead. Both offer a large sleeping surface, but there are differences in the mattress dimensions that may influence your final decision.

Remember, a king measures 76” wide and 80” long. A California king, on the other hand, is 72” wide and 84” long. So the California king isn’t as wide as a regular king, but it is longer, which may be attractive for people who are especially tall. Another factor to think about: Unless you shop at a full-service store like Sit ‘n Sleep, it can be difficult to find California king bedding and accessories, which aren’t as common as king size. Plus, many people think California king accessories cost more than king size. So while the prices for both mattresses are comparable, a California king may end up costing more when mattress protectors, bedding, and other items are added in.

If you’re trying to decide between the two, visit Sit ‘n Sleep to talk about your options with one of our sleep consultants. They’ll work with you to find the best fit for your needs and your budget.

What Are the Benefits of a King Mattress?

Customers may gravitate toward a king size mattress because it is:

Roomier: Compared to a queen or full bed, there’s more space to stretch out, whether you’re in the bed by yourself or you share it with a partner (or kids and pets who may want to cuddle up with you). 

Luxurious: If you have a big bedroom, you want a bed that is scaled to fill the space. In that case, a king bed will be a beautiful fit.

Comfortable: Because you don’t feel as cramped on a king mattress, you’ll likely sleep better in your preferred sleep position.

How Can You Choose the Right King Mattress for You?

If you’ve opted to get a king mattress, you’ll want to keep these things in mind when shopping:

Firmness: The proper mattress supports you in your sleep position. Back sleepers should pick a firmer mattress, while side and stomach sleepers will want something softer.

Construction: Memory foam is a popular pick because it can mold to your body, while coils offer spring and bounce. And if you want a combination of both, hybrid mattresses are the choice for you.

Price: King mattresses are typically more expensive than a queen or full. But you can count on Sit ‘n Sleep for king mattress sales that give you the most value for your money.

Sit ‘n Sleep: Your Trusted Source for King Mattresses

Shop our mattress collection, as well as our bed frames and platforms, to create the bed of your dreams!