Shop Medium King Gel Memory Foam Mattresses

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Mattress Firm's incredible assortment of mattress brands, types, sizes, and comfort levels means you're sure to find the perfect mattress for you. Whether you're into a firm or plush feel, a memory foam or hybrid comfort, or a twin or California king size, we've got the bed for you.

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  • WEB SPECIAL

    $149.50 - $299.50 $299.00 - $599.00 (up to 50% off)
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • WEB SPECIAL

    $309.00 - $499.00 $359.00 - $609.00 (up to 28% off)
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • $659.00 - $1,599.00
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH
  • IN SELECT MARKETS

    $1,749.00 - $1,999.00 $1,799.00 - $2,399.00 (up to 17% off)
    Pay over  48 months!
    All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $1,999.00, excluding tax and delivery charges, for 48 months at 0% APR*. Learn more.
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH