King
$49999
$1,49999
67% OFF
Medium Comfort, best for
All Sleep Positions
Pain
Toss and Turn
6 Sizes
King Size Mattresses
Providing the most room of any bed, couples find they have more space to accommodate their different sleep positions (and their pet!).
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King
Best Seller
72 Hour Sale
Best Seller
72 Hour Sale
King
$60199
$1,49999
60% OFF
Ultra Plush Comfort, best for
Side Sleepers
Toss and Turn
Bed Partner
6 Sizes
Best Seller
Everyday Value
King
$79999
Medium Comfort, best for
All Sleep Positions
Pain
Temperature
7 Sizes
Best Seller
72 Hour Sale
King
$37399
$1,69999
78% OFF
Firm Comfort, best for
Back and Stomach Sleepers
Bed Partner
Toss and Turn
6 Sizes
Best Seller
72 Hour Sale
King
$87499
$1,99999
56% OFF
Extra Firm Comfort, best for
Back and Stomach Sleepers
Bed Partner
Pain
6 Sizes
14 of 269 results
King Size Mattresses
Measuring 76" wide and 80" long, a king size mattress provides plenty of space for a couple to sleep comfortably. Not every bedroom can fit a king mattress, so be sure to measure that the king mattress size is not too big for your sleeping space before getting your heart set on one of the many king bed mattress options available. Simmons was the first company to market the king mattress size.