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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

Online Only Sale

Medium Soft

The DreamCloud Mattress

from $839.00

$419.00

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

Online Only Sale

Firm

Simmons Deep Sleep Firm

from $749.99

$449.99

get it Delivery date contingent on available inventory

Next Day Delivery Available

Medium Firm

Nectar Classic Memory Foam

from $699.00

$349.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

DreamCloud Premier2 Mattress

from $1,169.00

$649.00

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

On Sale

Medium Firm

Hybrid Infinity Cool Luxury

from $1,249.99

$1,099.99

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

Soft

Serta Grandmere Plush Pillow Top

from $1,119.99

$779.99

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

Online Only Sale

Firm

Apex Luxury Firm

from $469.99

$269.99

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

Soft

Serta Armisted Plush Euro Top

from $889.99

$569.99

get it Delivery date contingent on available inventory

Free Gift With Purchase

Medium Firm

Purple Mattress

from $999.00

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

Firm

Nova Euro Top 9.5 Inch Foam

from $419.99

$219.99

get it Delivery date contingent on available inventory

Firm

Cottage Luxury Firm

from $329.99

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

get it Delivery date contingent on available inventory

Soft

Cottage Euro Top

from $339.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Soft

Kingsdown Glamorous Euro Pillow Top

from $1,049.99

$689.99

Online Only Sale

Firm

Purple Plus Mattress

from $1,499.00

$1,199.00

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

Medium

Beautyrest Beachfront Bay Medium

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

Soft

Studio Euro Top

from $299.99

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

Firm

Nova 7 Inch Foam

from $399.99

$199.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Blissful Excellence Chandy Bay Firm

from $699.00

$399.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy Posturepedic Abbey Beach Firm

from $899.99

$599.99

get it Delivery date contingent on available inventory

Online Only Sale

Extra Firm

Orion Extra Firm

from $789.99

$389.99

Online Only Sale

Medium

Serta Perfect Sleeper Dazzling Night Hybrid Medium

from $1,599.99

$899.99

Online Only Sale

Soft

Simmons Deep Sleep Plush

from $749.99

$449.99

get it Delivery date contingent on available inventory

On Sale

Medium

Helix Midnight Luxe Medium Euro Top

from $1,638.66

$1,298.00

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

Online Only Sale

Soft

Apex Plush Euro Top

from $589.99

$289.99

On Sale

Medium Firm

Hybrid Infinity Cool Radiance

from $1,499.99

$1,299.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Blissful Excellence Alora Sky Plush

from $409.00

$209.00

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

On Sale

Medium

Sealy Carano Bay Medium

from $1,549.99

$774.99

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

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium Euro Pillow Top

from $1,374.99

$874.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium

from $899.99

$599.99

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

Medium Soft

Cloudtech Stratus Medium Euro Top

from $1,299.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

Kingsdown Beauty Firm

from $999.99

$649.99

Online Only Sale

Extra Firm

Serta Blissful Excellence Enchanting Skies Extra Firm

from $799.00

$609.00

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

TEMPUR - Adapt Medium Mattress

from $1,699.00

$1,189.30

Online Only Sale

Firm

Serta Perfect Sleeper Dazzling Night Hybrid Firm

from $1,599.99

$899.99

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

Simmons Deep Sleep Hybrid Medium

from $899.99

$599.99

get it Delivery date contingent on available inventory

On Sale

Soft

Sealy Carano Bay Soft Euro Pillow Top

from $1,749.99

$874.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Apollo Plush Euro Top

from $619.99

$319.99

Online Only Sale

Firm

Apollo Luxury Firm

from $609.99

$309.99

get it Delivery date contingent on available inventory

Online Only Sale

Extra Firm

Beautyrest Cypress Bay Extra Firm

from $1,499.99

$899.99

Online Only Sale

Firm

Orion Luxury Firm

from $789.99

$389.99

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

get it Delivery date contingent on available inventory

Online Only Sale

Medium

Sealy Posturepedic Hybrid Patterson Medium

from $1,224.99

$824.99

get it Delivery date contingent on available inventory

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

Firm

Kingsdown Nuovo Firm Euro Top

from $799.99

$499.99

Online Only Sale

Firm

Sealy Posturepedic Hybrid Lacey Firm

from $1,224.99

$824.99

Firm

Serta Perfect Sleeper Morro Bay Firm

from $699.99

get it Delivery date contingent on available inventory

Medium

Serta Perfect Sleeper Pacific Palisades Medium Pillow Top

from $1,099.99

get it Delivery date contingent on available inventory

Firm

King Koil Duet Ultra Firm

from $1,099.99

get it Delivery date contingent on available inventory

Firm

King Koil Premiere Luxury Firm Box Pillow Top

from $1,799.99

get it Delivery date contingent on available inventory

Online Only Sale

Medium Firm

TEMPUR - Adapt Medium Hybrid Mattress

from $1,999.00

$1,399.30

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Cool Encore Luxury Mattress

from $1,299.99

$999.99

get it Delivery date contingent on available inventory

Firm

King Koil Keystone Firm Euro Top

from $1,299.99

get it Delivery date contingent on available inventory

Medium Soft

King Koil Premiere Plush Box Pillow Top

from $1,899.99

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Casper The One

from $749.00

$599.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy Posturepedic Abbey Beach Firm Fx Euro Top

from $1,174.99

$774.99

Online Only Sale

Firm

Apex Firm

from $469.99

$269.99

Medium Firm

Stearns & Foster Estate – Firm Euro Pillow Top

from $2,499.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

TEMPUR - ProAdapt Firm Mattress

from $2,899.00

$2,029.30

get it Delivery date contingent on available inventory

On Sale

Medium

Casper Dream Hybrid

from $1,495.00

$1,195.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Serta Blissful Excellence Delani Meadows Firm Pillow Top

from $849.00

$549.00

Online Only Sale

Medium

Sealy Posturepedic Abbey Beach Medium Fx Euro Top

from $1,174.99

$774.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Beautyrest Beachfront Bay Plush

from $1,099.99

$699.99

Medium

Serta Perfect Sleeper Morro Bay Medium

from $799.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Apollo Plush

from $609.99

$309.99

Firm

Stearns & Foster Estate – Firm Tight Top

from $2,299.00

get it Delivery date contingent on available inventory

Firm

Cloudtech Stratus Firm

from $1,099.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy Golden Elegance Fortuna Firm

from $599.99

$399.99

Online Only Sale

Soft

Sealy Posturepedic Abbey Beach Soft Euro Pillow Top

from $1,374.99

$874.99

Online Only Sale

Firm

Beautyrest Driftwood Bay Hybrid Firm

from $1,499.99

$899.99

Free Gift With Purchase

Soft

Purple RestorePlus Soft

from $2,549.00

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

On Sale

Extra Firm

Beautyrest Black Series One Extra Firm

from $1,549.99

$1,349.99

get it Delivery date contingent on available inventory

On Sale

Medium Firm

Nectar Hybrid Premier

from $1,349.00

$799.00

get it Delivery date contingent on available inventory

Extra Firm

Avocado Green Mattress

from $1,399.00

get it Delivery date contingent on available inventory

On Sale

Medium

Helix Midnight Core Medium Euro Top

from $1,330.66

$1,048.00

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Sealy Posturepedic Hybrid Lacey Soft

from $1,224.99

$824.99

get it Delivery date contingent on available inventory

Online Only Sale

Soft

Serta Perfect Sleeper Pacific Palisades Plush

from $2,099.99

$999.99

$300 Instant Gift

Soft

Tempur-LuxeBreeze Soft 2.0

from $5,099.00

get it Delivery date contingent on available inventory

Free Gift With Purchase

Firm

Purple RestorePlus Firm

from $2,549.00

get it Delivery date contingent on available inventory

Online Only Sale

Firm

TEMPUR - ProAdapt Medium Mattress

from $2,899.00

$2,029.30

get it Delivery date contingent on available inventory

On Sale

Medium Soft

Cool Encore Standard Mattress

from $1,049.99

$899.99

get it Delivery date contingent on available inventory

Online Only Sale

Firm

Sealy Dream Waves Firm Tight Top

from $584.00

$409.00

On Sale

Medium Firm

Nectar Foam Luxe 5.1

from $1,499.00

$999.00

get it Delivery date contingent on available inventory

On Sale

Medium

Casper Snow Hybrid

from $1,895.00

$1,495.00

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

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!