King
$56770
$1,49999
62% OFF
Ultra Plush Comfort, best for
Side Sleepers
Toss and Turn
Bed Partner
6 Sizes
King Bed in a Box Mattresses
267
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King
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Deal of the day
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King
$2,89900
Medium Comfort, best for
All Sleep Positions
Pain
Temperature
6 Sizes
Only at Mattress Firm
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King
$1,69999
$2,09999
Firm Comfort, best for
Back and Stomach Sleepers
Pain
Toss and Turn
6 Sizes
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Deal of the day
King
$55899
$1,29999
57% OFF
Medium Comfort, best for
All Sleep Positions
Toss and Turn
Pain
7 Sizes
14 of 267 results
King Bed in a Box Mattresses
The convenience of a bed in a box makes purchasing and receiving your mattress easier than ever. Arriving straight to your door in a compact shipping size, box beds make maneuvering tight spaces like stairways and corners painless. Simply unpack, roll out and allow your box bed to reach its full shape and comfort for the high-quality sleep you want. For the best bed in a box for you, shop our collection today.