Comfort level: medium Flame-retardant polyester comfort fiber Luxury loft fiber High-density plush quilt foam for support and comfort Base support foam for stability and durability Bonnell coil unit for increased 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 State recycling fee may apply