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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

286 Items
286 Items

$300 Gift

Firm

$300 Gift

Firm

Tempur-LuxeBreeze Firm 2.0 King Split Head

from $10,398.00

get it Delivery date contingent on available inventory

Online Only

Soft

Online Only

Soft

Sealy Posturepedic Elite Spring Brenham2 Soft Euro Top

from $2,119.00

Online Only

Medium

Online Only

Medium

Sealy Posturepedic Elite Spring Brenham2 Medium Euro Top

from $2,119.00

Online Only

Firm

Online Only

Firm

Sealy Posturepedic Elite Spring Brenham2 Ultra Firm Mattress

from $1,919.00

Online Only

Soft

Online Only

Soft

Sealy Posturepedic Elite Spring Albany2 Soft Euro Pillow Top

from $1,819.00

Online Only

Soft

Online Only

Soft

Sealy Posturepedic Elite HPoint2 Hybrid Soft Mattress

from $2,419.00

Online Only

Medium

Online Only

Medium

Sealy Posturepedic Elite Albany2 Hybrid Medium Mattress

from $1,819.00

get it Delivery date contingent on available inventory

Online Only

Soft

Online Only

Soft

Stearns & Foster Lux Hybrid Elite Soft

from $3,349.00

Online Only

Medium

Online Only

Medium

Stearns & Foster Lux Hybrid Elite Medium

from $3,349.00

Online Only

Firm

Online Only

Firm

Stearns & Foster Lux Hybrid Elite Firm

from $3,349.00

Medium Firm

Medium Firm

Avocado Grand Luxe Firm Mattress

from $8,499.00

$8,499.00

Close Out Mode

Firm

Close Out Mode

Firm

King Koil PureBliss Sanctuary Firm King Mattress

from $3,199.99

$1,929.77

get it Delivery date contingent on available inventory

Online Only

Soft

Online Only

Soft

Beautyrest World Class Level Four Hybrid Plush

from $1,599.99

Online Only

Firm

Online Only

Firm

Beautyrest World Class Level Four Hybrid Firm

from $1,599.99

Online Only

Firm

Online Only

Firm

Beautyrest World Class Level Three Hybrid Firm

from $1,299.99

Online Only

Soft

Online Only

Soft

Beautyrest World Class Level Four Plush

from $1,599.99

Online Only

Soft

Online Only

Soft

Beautyrest World Class Level Three Plush

from $1,299.99

Medium Soft

Medium Soft

King Koil Paradise Valley Medium Plush

from $2,399.99

get it Delivery date contingent on available inventory

Medium

Medium

King Koil Xtended Life Topaz Hybrid

from $2,699.99

get it Delivery date contingent on available inventory

Medium

Medium

King Koil Monarch Cashmere Trimline

from $6,999.99

get it Delivery date contingent on available inventory

On Sale

Soft

On Sale

Soft

Sealy Hybrid Eagle Park Soft King

from $1,849.99

$645.77

get it Delivery date contingent on available inventory

Online Only

Firm

Online Only

Firm

Beautyrest Black Series Four Hybrid Firm Apex Top

from $4,649.99

Online Only

Soft

Online Only

Soft

Beautyrest Black Series Three Hybrid Plush

from $3,149.99

Online Only

Firm

Online Only

Firm

Beautyrest Black Series Three Hybrid Firm

from $3,149.99

Online Only

Firm

Online Only

Firm

Beautyrest Black Series Two Hybrid Firm

from $2,749.99

get it Delivery date contingent on available inventory

Online Only

Firm

Online Only

Firm

Beautyrest Black Series One Hybrid Firm

from $1,649.99

Online Only

Soft

Online Only

Soft

Beautyrest Black Series One Hybrid Plush

from $1,849.99

Online Only

Soft

Online Only

Soft

Beautyrest Black Series Four Plush Pillow Top

from $4,649.00

Online Only

Medium

Online Only

Medium

Beautyrest Black Series Four Medium Pillow Top

from $4,649.00

Online Only

Medium

Online Only

Medium

Beautyrest Black Series Three Medium

from $3,249.00

Online Only

Firm

Online Only

Firm

Beautyrest Black Series Three Firm

from $3,249.00

Online Only

Extra Firm

Online Only

Extra Firm

Beautyrest Black Series Three Extra Firm

from $3,249.00

Online Only

Medium

Online Only

Medium

Beautyrest Black Series Three Medium Pillow Top

from $3,649.00

Online Only

Soft

Online Only

Soft

Beautyrest Black Series Two Plush Pillow Top

from $2,749.00

Online Only

Soft

Online Only

Soft

Beautyrest Black Series Two Plush

from $2,549.00

Online Only

Medium

Online Only

Medium

Beautyrest Black Series Two Medium

from $2,549.00

Online Only

Medium

Online Only

Medium

Beautyrest Black Series One Medium Pillow Top

from $2,249.00

Online Only

Firm

Online Only

Firm

Beautyrest Black Series One Firm Pillow Top

from $2,249.00

Online Only

Soft

Online Only

Soft

Beautyrest Black Series One Plush

from $1,949.99

get it Delivery date contingent on available inventory

Online Only

Medium

Online Only

Medium

Beautyrest Black Series One Medium

from $1,949.99

Soft

Soft

Kingsdown Youngsford Plush Euro Top

from $3,829.00

get it Delivery date contingent on available inventory

Firm

Firm

Kingsdown Yatesdale Firm

from $3,329.00

Firm

Firm

Kingsdown Wavendon Firm Euro Top

from $3,129.00

get it Delivery date contingent on available inventory

Soft

Soft

Kingsdown Westpine Plush

from $3,029.00

get it Delivery date contingent on available inventory

Firm

Firm

Kingsdown Treybrooke Firm Euro Top

from $2,629.00

get it Delivery date contingent on available inventory

Soft

Soft

Kingsdown Keybridge Plush

from $2,429.00

get it Delivery date contingent on available inventory

Free Gift

Soft

Free Gift

Soft

Purple Rejuvenate Ultimate

from $7,499.00

$6,999.00

get it Delivery date contingent on available inventory

Free Gift

Soft

Free Gift

Soft

Purple Rejuvenate Premier2

from $6,499.00

$5,999.00

get it Delivery date contingent on available inventory

On Sale

Firm

On Sale

Firm

Helix Premier Firm Euro Top2

from $1,998.75

$1,499.00

get it Delivery date contingent on available inventory

Online Only

Medium Firm

Online Only

Medium Firm

Stearns & Foster Reserve – Soft Euro Pillow Top

from $5,399.00

Online Only

Medium

Online Only

Medium

Stearns & Foster Lux Estate – Elite Medium Euro Pillow Top

from $3,899.00

Online Only

Firm

Online Only

Firm

Stearns & Foster Lux Estate – Firm Pillow Top

from $3,399.00

Online Only

Soft

Online Only

Soft

Stearns & Foster Estate – Soft Euro Pillow Top

from $2,499.00

Online Only

Soft

Online Only

Soft

Stearns & Foster Estate – Soft Tight Top

from $2,299.00

Online Only

Medium

Online Only

Medium

Stearns & Foster Estate – Medium Tight Top

from $1,899.00

Online Only

Soft

Online Only

Soft

Sealy Golden Spirits Soft Tight Top

from $784.00

$609.00

Online Only

Soft

Online Only

Soft

Beautyrest Black Series Four Hybrid Plush Apex Top

from $4,649.99

Medium

Medium

Beautyrest Black Series Two Hybrid Medium Apex Top

from $3,049.99

get it Delivery date contingent on available inventory

Firm

Firm

Beautyrest Black Series Three Firm Pillow Top

from $3,649.99

get it Delivery date contingent on available inventory

Soft

Soft

Beautyrest Black Series One Plush Pillow Top

from $2,249.99

get it Delivery date contingent on available inventory

Online Only

Medium

Online Only

Medium

Avocado Eco Kids Mattress

from $699.00

$559.00

$300 Gift

Medium Firm

$300 Gift

Medium Firm

TEMPUR-ActiveBreeze® Smart Bed

from $9,598.00

Firm

Firm

King Koil Smartlife Ivy 2.0

from $4,399.99

get it Delivery date contingent on available inventory

Online Only

Soft

Online Only

Soft

Sealy Golden Elegance C Bay Soft

from $1,384.99

$884.99

Online Only

Firm

Online Only

Firm

Sealy Golden Elegance C Bay Ultra Firm

from $1,384.99

$821.77

get it Delivery date contingent on available inventory

Online Only

Soft

Online Only

Soft

Sealy Golden Elegance Ella Bay Soft Euro Pillow Top

from $1,184.99

$784.99

Online Only

Soft

Online Only

Soft

Sealy Golden Elegance Ella Bay Soft

from $1,084.99

$684.99

Online Only

Medium

Online Only

Medium

Sealy Golden Elegance Aris Medium

from $1,184.99

$784.99

Online Only

Soft

Online Only

Soft

Sealy Golden Elegance Fiji Palms Soft Euro Pillow Top

from $924.99

$624.99

Online Only

Soft

Online Only

Soft

Serta Blissful Excellence Hastings Hybrid Plush

from $1,499.00

$699.00

Online Only

Soft

Online Only

Soft

Serta Blissful Excellence Enchanting Skies Plush Pillow Top

from $1,099.00

$659.00

Online Only

Soft

Online Only

Soft

Kingsdown Mode Plush

from $879.99

$579.99

Online Only

Firm

Online Only

Firm

Kingsdown Mode Firm

from $879.99

$579.99

On Sale

Soft

On Sale

Soft

Cloudtech Cirrus Smooth Top Plush

from $2,199.99

$1,499.00

get it Delivery date contingent on available inventory

Firm

Firm

Technogel Sereno III

from $2,824.99

get it Delivery date contingent on available inventory

Firm

Firm

Technogel Favola III

from $3,775.99

get it Delivery date contingent on available inventory

Medium

Medium

Stearns & Foster Lux Estate – Medium Pillow Top

from $3,699.00

Medium

Medium

Stearns & Foster Lux Estate – Medium Tight Top

from $3,099.00

Online Only

Medium

Online Only

Medium

Stearns & Foster Studio – Medium Euro Pillow Top

from $1,899.00

Soft

Soft

King Koil Grayhawk Bliss Top Ultra Plush

from $3,599.99

get it Delivery date contingent on available inventory

Extra Firm

Extra Firm

King Koil Whisper Rock Extra Firm

from $2,099.99

get it Delivery date contingent on available inventory

Firm

Firm

King Koil Silver Leaf Firm Euro Top

from $2,599.99

get it Delivery date contingent on available inventory

Firm

Firm

King Koil Palo Verde TrimLine Firm

from $2,899.99

get it Delivery date contingent on available inventory

Soft

Soft

King Koil Palo Verde TrimLine Plush

from $2,899.99

get it Delivery date contingent on available inventory

$300 Gift

Medium

$300 Gift

Medium

Tempur-ProBreeze Medium Hybrid 2.0

from $3,899.00

get it Delivery date contingent on available inventory

Firm

Firm

Kingsdown Temp IQ Hybrid Firm

from $2,349.00

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!