Comfort level: firm Flame-retardant polyester comfort fiber Luxury loft fiber Memory foam and high-density quilt foam for support and comfort High-density plush cooling gel latex for all-seasons comfort High-density firm foam for added support; high-density base support foam for stability and durability Power-packed wrapped coil unit with Ashley Edge to minimize motion transfer and increase support Hyper Cool luxury 4-way stretch knit cover for uniform comfort and durability Adjustable base compatible 10-year non-prorated warranty Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details Foundation/box spring sold separately Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening