Comfort level: medium High-density gel memory foam lumbar support High-density quilt foam Individual power packed wrapped coils 2 perimeter rows of 9" 13-gauge wrapped coils for edge-to-edge support 10-year non-prorated warranty Adjustable base compatible Foundation/box spring sold separately State recycling fee may apply Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening