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Shop Extra Firm California King 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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  • iSeries Hybrid 100 13.5" Firm Mattress

    ONLY AT MATTRESS FIRM

    Serta iSeries Hybrid 100 13.5" Firm Mattress
    Serta iSeries Hybrid 100 13.5" Firm Mattress
    $767.36 - $1,151.36 $1,199.00 - $1,799.0 (up to 36% off)
     or as low as  $43.71/mo 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
  • Legend Garrison 14.7" Extra Firm Mattress
    Simmons Beautyrest Legend Garrison 14.7" Extra Firm Mattress
    Simmons Beautyrest Legend Garrison 14.7" Extra Firm Mattress
    $1,999.20 - $2,719.20 $2,499.00 - $3,399.0 (up to 20% off)
     or as low as  $41.65/mo 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
  • iComfort Blue Touch 300 11.25" Firm Mattress

    ONLY AT MATTRESS FIRM

    Serta iComfort Blue Touch 300 11.25" Firm Mattress
    Serta iComfort Blue Touch 300 11.25" Firm Mattress
    $1,149.00 - $1,999.00
     or as low as  $36.64/mo All monthly payments are rounded up to the nearest whole dollar. +Monthly payment is based on minimum purchase price alone of $1,299.00, excluding tax and delivery charges, for 36 months at 0% APR*. Learn more.
    EXTRA FIRM FIRM MEDIUM PLUSH ULTRA PLUSH