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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

239 Items

Online Only Sale

Soft

Serta Perfect Sleeper Pacific Palisades Plush

from $2,099.99

$999.99

get it Delivery date contingent on available inventory

Memorial Sale

Medium

Beautyrest Black B-Class Medium

from $2,049.99

$1,749.99

get it Delivery date contingent on available inventory

Memorial Sale

Extra Firm

Beautyrest Black B-Class Extra Firm

from $1,849.99

$1,549.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Perfect Sleeper La Jolla Plush

from $899.99

$599.99

Soft

Serta Perfect Sleeper Morro Bay Plush Pillow Top

from $899.99

get it Delivery date contingent on available inventory

Medium

Serta Perfect Sleeper Morro Bay Medium

from $799.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Firm

Tempur-LuxeBreeze Firm 2.0

from $5,099.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Soft

Purple RestorePlus Soft

from $2,549.00

$2,249.00

get it Delivery date contingent on available inventory

Memorial Sale

Medium

King Koil Santa Cruz

from $1,099.99

$999.99

get it Delivery date contingent on available inventory

Extra Firm

Stearns & Foster Estate – Ultra Firm Tight Top

from $2,299.00

get it Delivery date contingent on available inventory

Extra Firm

Stearns & Foster Lux Estate – Ultra Firm Tight Top

from $2,899.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Rosewood Medium Euro Top

from $1,299.99

get it Delivery date contingent on available inventory

Memorial Sale

Soft

Beautyrest Black22 Hybrid K-Class Plush

from $3,949.99

$3,349.99

get it Delivery date contingent on available inventory

Firm

Cloudtech Stratus Firm

from $1,099.99

get it Delivery date contingent on available inventory

Memorial Sale

Firm

Cool Encore Standard Mattress

from $1,049.99

$899.99

get it Delivery date contingent on available inventory

Memorial Sale

Medium Soft

Hybrid Infinity Cool Icon

from $1,699.99

$1,499.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Blissful Excellence Chandy Bay Plush Euro Top

from $699.00

$399.00

Online Only Sale

Firm

Sealy Posturepedic Hybrid Lacey Firm

from $1,224.99

$824.99

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium Fx Euro Top

from $1,174.99

$774.99

Online Only Sale

Firm

Sealy Posturepedic Abbey Beach Firm Fx Euro Top

from $1,174.99

$774.99

Memorial Sale

Extra Firm

King Koil Xtended Life Onyx Extra Firm

from $2,399.99

$2,199.99

get it Delivery date contingent on available inventory

Soft

Serta Perfect Sleeper Pacific Palisades Plush Pillow Top

from $1,299.99

get it Delivery date contingent on available inventory

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

Soft

Orion Pillow Top

from $959.99

$459.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Orion Firm

from $789.99

$389.99

get it Delivery date contingent on available inventory

Memorial Sale

Firm

King Koil Otto Ultra Firm

from $1,999.99

$1,799.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Firm

Purple RestorePlus Firm

from $2,549.00

$2,249.00

get it Delivery date contingent on available inventory

Memorial Sale

Soft

Kingsdown Northwood Plush

from $1,749.00

$1,649.00

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

Online Only Sale

Medium Firm

Stearns & Foster Lux Hybrid – Firm

from $3,499.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Duet Plush

from $999.99

get it Delivery date contingent on available inventory

Medium Soft

King Koil Laurel Plush Euro Top

from $1,399.99

get it Delivery date contingent on available inventory

Memorial Sale

Medium

Beautyrest Black22 L-Class Medium Pillow Top

from $2,849.99

$2,549.99

get it Delivery date contingent on available inventory

Memorial Sale

Medium

Beautyrest Black22 Hybrid C-Class Medium

from $3,049.99

$2,449.99

get it Delivery date contingent on available inventory

Firm

Cloudtech Nimbus Firm Euro Top

from $2,099.99

get it Delivery date contingent on available inventory

Memorial Sale

Soft

King Koil Smartlife Lotus 2.0

from $4,699.99

$4,199.99

Memorial Sale

Medium

King Koil Smartlife Lily 2.0

from $4,199.99

$3,699.99

Memorial Sale

Firm

King Koil Smartlife Ivy 2.0

from $4,199.99

$3,699.99

Memorial Sale

Medium

King Koil PureBliss Sanctuary Medium

from $2,199.99

$1,999.99

get it Delivery date contingent on available inventory

Memorial Sale

Firm

King Koil PureBliss Sanctuary Firm

from $1,999.99

$1,799.99

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

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

$300 Instant Gift

Firm

TEMPUR-LuxeAdapt Firm 2.0

from $3,799.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Soft

TEMPUR-LuxeAdapt Soft 2.0

from $3,799.00

get it Delivery date contingent on available inventory

$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

Soft

TEMPUR-ProAdapt Soft 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

$300 Instant Gift

Firm

TEMPUR-ProAdapt Firm 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

$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 Fiji Palms Soft Euro Pillow Top

from $924.99

$624.99

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

Soft

Sealy Golden Elegance Fortuna Soft

from $659.99

$459.99

Online Only Sale

Firm

Sealy Golden Elegance Fortuna Firm

from $599.99

$399.99

Online Only Sale

Soft

Serta Blissful Excellence Hastings Hybrid Plush

from $1,099.00

$699.00

Online Only Sale

Medium

Serta Blissful Excellence Hastings Hybrid Medium

from $999.00

$599.00

Online Only Sale

Firm

Serta Blissful Excellence Hastings Hybrid Firm

from $799.00

$499.00

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

$899.00

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 $1,059.00

$659.00

Online Only Sale

Soft

Serta Blissful Excellence Enchanting Skies Plush

from $1,009.00

$609.00

Online Only Sale

Soft

Serta Blissful Excellence Delani Meadows Plush

from $749.00

$449.00

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

Online Only Sale

Firm

Kingsdown Nuovo Firm Euro Top

from $799.99

$499.99

Online Only Sale

Soft

Kingsdown Mode Plush Euro Top

from $1,129.99

$729.99

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

Online Only Sale

Firm

Kingsdown Mode Hybrid Firm

from $1,059.99

$659.99

Online Only Sale

Soft

Kingsdown Mode Plush

from $879.99

$579.99

Online Only Sale

Firm

Kingsdown Mode Firm

from $879.99

$579.99

Memorial Sale

Medium

King Koil Xtended Life Onyx Hybrid

from $2,399.99

$2,199.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Posturepedic Estero Bay Medium

from $1,374.99

$874.99

On Sale

Medium

Sealy Hybrid Kelcie Medium

from $949.99

$774.99

get it Delivery date contingent on available inventory

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

Firm

Technogel Sereno III

from $2,824.99

get it Delivery date contingent on available inventory

Firm

Technogel Armonia III

from $3,124.99

Firm

Technogel Favola III

from $3,775.99

get it Delivery date contingent on available inventory

Medium Firm

Technogel Estasi III

from $3,444.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Posturepedic Abbey Beach Soft Euro Pillow Top

from $1,374.99

$874.99

Online Only Sale

Soft

Sealy Posturepedic Abbey Beach Soft Fx Euro Top

from $1,174.99

$774.99

Online Only Sale

Soft

Sealy Posturepedic Abbey Beach Soft

from $899.99

$599.99

Medium

Stearns & Foster Lux Estate – Medium Tight Top

from $2,899.00

get it Delivery date contingent on available inventory

Memorial Sale

Medium

King Koil Xtended Life Onyx Medium

from $2,499.99

$2,299.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Beautyrest Driftwood Bay Hybrid Plush

from $1,499.99

$899.99

Online Only Sale

Firm

Beautyrest Driftwood Bay Hybrid Firm

from $1,499.99

$899.99

Online Only Sale

Medium

Beautyrest Cypress Bay Medium

from $1,499.99

$899.99

Memorial Sale

Soft

Beautyrest Black B-Class Plush Pillow Top

from $2,249.99

$1,949.99

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

Soft

Serta Perfect Sleeper Morro Bay Plush

from $1,299.99

$799.99

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.

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!