Shop Firm King Foam Mattresses

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With a roomy 76" by 80" of sleeping space, a king size firm foam mattress supplies a good value and great sleep. Couples will love the spacious size of a king firm foam mattress, and they'll enjoy the many benefits of foam. While the firm bed will provide enough support to keep sleepers comfortable, the foam construction will prevent the formation of painful pressure points to let sleepers rest well all night long.

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  • $59.00 - $139.00
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • NEW AT MATTRESS FIRM

    $599.00 - $1,129.00
    Pay over  24 months!
    All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $999.00, excluding tax and delivery charges, for 24 months at 0% APR*. Learn more.
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • WEB SPECIAL

    $207.20 - $351.20 $259.00 - $439.00 (up to 20% off)
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • WEB SPECIAL

    $191.20 - $311.20 $239.00 - $389.00 (up to 20% off)
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH