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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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239 Items

On Sale

Medium Firm

Nectar Memory Foam

from $699.00

$349.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

The DreamCloud Mattress

from $839.00

$419.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

Sealy Anza Ridge Plush Euro Top

from $1,024.99

$459.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Simmons Deep Sleep Firm

from $749.99

$449.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

Sealy Anza Ridge Cushion Firm

from $1,024.99

$459.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

Beautyrest Albury Medium

from $919.99

$559.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

Sealy Anza Ridge Firm

from $1,024.99

$399.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Chamblee Firm

from $999.99

$569.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy HTL Ultra Firm

from $774.99

$474.99

get it Delivery date contingent on available inventory

Spring Sale

Firm

Kingsdown Passions Phoenician Firm Red

from $2,199.00

$760.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Grandmere Plush Pillow Top

from $1,119.99

$669.99

get it Delivery date contingent on available inventory

$100 Instant Gift

Medium Firm

Purple Mattress

from $999.00

$799.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Simmons Deep Sleep Medium Pillow Top

from $799.99

$499.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Simmons Deep Sleep Hybrid Firm

from $799.99

$499.99

get it Delivery date contingent on available inventory

Firm

7 Inch Foam

from $199.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

DreamCloud Premier2 Mattress

from $1,169.00

$585.00

get it Delivery date contingent on available inventory

On Sale

Medium

Hybrid Infinity Cool Essential

from $749.99

$649.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Apex Luxury Firm

from $469.99

$269.99

Online Only Sale

Soft

Serta Armisted Plush Euro Top

from $889.99

$469.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

Beautyrest Barnesdale Plush Euro Top

from $1,119.99

$699.99

get it Delivery date contingent on available inventory

Spring Sale

Medium Firm

Kingsdown Passions Navarino Plush Blue

from $2,199.00

$760.00

get it Delivery date contingent on available inventory

Firm

Cottage Luxury Firm

from $329.99

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Hybrid Infinity Cool Luxury

from $1,249.99

$1,099.99

get it Delivery date contingent on available inventory

Spring Sale

Firm

Kingsdown Passions Miraval Pillow Top Blue

from $2,799.00

$1,140.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Brookton Plush

from $999.99

$569.99

get it Delivery date contingent on available inventory

$100 Instant Gift

Firm

Purple Plus Mattress

from $1,499.00

$1,099.00

get it Delivery date contingent on available inventory

Soft

Cottage Euro Top

from $339.99

get it Delivery date contingent on available inventory

Firm

Hybrid Infinity Cool Firm

from $899.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy HTL Soft Euro Pillow Top

from $899.99

$599.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

Kingsdown Glamorous Euro Pillow Top

from $1,049.99

$689.99

Firm

9.5 Inch Foam Euro Top

from $229.99

get it Delivery date contingent on available inventory

Only Available While Supplies Last

Firm

Cool Encore Classic Mattress By Classic

from $649.99

$411.00

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Hybrid Infinity Cool Standard

from $1,049.99

$899.99

get it Delivery date contingent on available inventory

Online Only Sale

Extra Firm

Orion Extra Firm

from $789.99

$389.99

get it Delivery date contingent on available inventory

Soft

Studio Euro Top

from $299.99

get it Delivery date contingent on available inventory

Medium Firm

Sealy Carmel Creek Medium Euro Pillow Top

from $1,099.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Medium Firm

TEMPUR - Adapt Medium Mattress

from $1,699.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Nova Euro Top 9.5 Inch Foam

from $419.99

$219.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Simmons Deep Sleep Hybrid Plush

from $999.99

$699.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Beautyrest Beachfront Bay Medium Pillow Top

from $1,299.99

$799.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Simmons Deep Sleep Plush

from $749.99

$449.99

Spring Sale

Soft

Kingsdown Passions Glenmere Pillow Top Green

from $2,799.00

$1,140.00

get it Delivery date contingent on available inventory

$300 Instant Gift

Medium Firm

TEMPUR - Adapt Medium Hybrid Mattress

from $1,999.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Nectar Premier

from $1,049.00

$549.00

Online Only Sale

Firm

Nova 7 Inch Foam

from $399.99

$199.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Simmons Deep Sleep Hybrid Medium

from $899.99

$599.99

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Hybrid Infinity Cool Radiance

from $1,499.99

$1,299.99

get it Delivery date contingent on available inventory

Medium Soft

Cloudtech Stratus Medium Euro Top

from $1,299.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Apex Plush Euro Top

from $589.99

$289.99

get it Delivery date contingent on available inventory

On Sale

Firm

Cool Encore Firm Mattress

from $849.99

$649.99

get it Delivery date contingent on available inventory

Spring Sale

Firm

Beautyrest Black22 Hybrid L-Class Firm

from $2,349.99

$2,049.99

get it Delivery date contingent on available inventory

Medium Firm

Sealy Hybrid Albany Medium

from $1,779.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

Kingsdown Beauty Firm

from $999.99

$649.99

Online Only Sale

Firm

Nectar Premier Copper

from $1,499.00

$999.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Beautyrest Beachfront Bay Firm

from $1,099.99

$699.99

get it Delivery date contingent on available inventory

Firm

King Koil Duet Ultra Firm

from $999.99

get it Delivery date contingent on available inventory

Medium Soft

King Koil Premiere Plush Box Pillow Top

from $1,799.99

get it Delivery date contingent on available inventory

Soft

Sealy Cliff Rose Plush Euro Pillow Top

from $1,394.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Firm

TEMPUR - ProAdapt Firm Mattress

from $2,899.00

get it Delivery date contingent on available inventory

Online Only Sale

Extra Firm

Beautyrest Cypress Bay Extra Firm

from $1,499.99

$899.99

get it Delivery date contingent on available inventory

Firm

King Koil Keystone Firm Euro Top

from $1,199.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Beautyrest Beachfront Bay Medium

from $899.99

$599.99

Online Only Sale

Firm

Serta Perfect Sleeper Dazzling Night Hybrid Firm

from $1,599.99

$899.99

Online Only Sale

Soft

Apollo Plush Euro Top

from $619.99

$319.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Apollo Luxury Firm

from $609.99

$309.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Apex Firm

from $469.99

$269.99

get it Delivery date contingent on available inventory

Firm

King Koil Premiere Luxury Firm Box Pillow Top

from $1,699.99

get it Delivery date contingent on available inventory

Medium Firm

Sealy Cliff Rose Cushion Firm Euro Pillow Top

from $1,394.99

get it Delivery date contingent on available inventory

On Sale

Firm

Cool Encore Luxury Mattress

from $1,299.99

$999.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Serta Blissful Excellence Borbela Harbor Medium Euro Top

from $519.00

$319.00

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium

from $899.99

$599.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy Posturepedic Abbey Beach Firm

from $899.99

$599.99

Online Only Sale

Medium

Tempur-Cloud Medium

from $1,699.00

$1,189.30

Online Only Sale

Soft

Apollo Plush

from $609.99

$309.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Soft

Tempur-LuxeBreeze Soft 2.0

from $5,099.00

get it Delivery date contingent on available inventory

On Sale

Medium Firm

King Koil Becker

from $499.99

$449.99

get it Delivery date contingent on available inventory

Firm

Sealy Carmel Creek Ultra Firm

from $899.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Firm

TEMPUR - ProAdapt Medium Mattress

from $2,899.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium Euro Pillow Top

from $1,374.99

$874.99

On Sale

Soft

King Koil Riptide Plush Euro Top

from $2,349.99

$1,049.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Beautyrest Beachfront Bay Plush

from $1,099.99

$699.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Serta Perfect Sleeper Dazzling Night Hybrid Medium

from $1,599.99

$899.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Perfect Sleeper La Jolla Firm

from $899.99

$599.99

get it Delivery date contingent on available inventory

On Sale

Firm

Serta Perfect Sleeper Pacific Palisades Firm Pillow Top

from $2,199.99

$1,099.99

get it Delivery date contingent on available inventory

On Sale

Extra Firm

Serta Perfect Sleeper Pacific Palisades Extra Firm

from $1,999.99

$999.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Tempur-Cloud Medium Hybrid

from $1,899.00

$1,329.30

Online Only Sale

Firm

Orion Luxury Firm

from $789.99

$389.99

get it Delivery date contingent on available inventory

Spring Sale

Firm

Beautyrest Black22 K-Class Firm Pillow Top

from $4,049.99

$3,449.99

get it Delivery date contingent on available inventory

Spring Sale

Firm

Beautyrest Black22 L-Class Firm

from $2,249.99

$1,949.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Kingsdown Tenderness Plush

from $999.99

$649.99

Online Only Sale

Soft

Serta Blissful Excellence Alora Sky Plush

from $409.00

$209.00

Online Only Sale

Firm

Sealy Posturepedic Malibu Palms Firm

from $1,374.99

$874.99

On Sale

Soft

Sealy Carano Bay Soft Euro Pillow Top

from $1,749.99

$874.99

get it Delivery date contingent on available inventory

$300 Instant Gift

Soft

Purple Restore Soft

from $1,999.00

get it Delivery date contingent on available inventory

On Sale

Firm

Cool Encore Elite Mattress

from $1,599.99

$1,399.99

get it Delivery date contingent on available inventory

Primo Galaxy 2

from $359.99

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 Firm

Stearns & Foster Estate – Firm Euro Pillow Top

from $2,499.00

get it Delivery date contingent on available inventory

Firm

Stearns & Foster Estate – Firm Tight Top

from $2,299.00

get it Delivery date contingent on available inventory

Medium Soft

King Koil Genesis

from $5,699.99

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.

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!