Comfort level: medium High-density gel memory foam for lumbar support High-density quilt foam Polyester comfort fiber Support pad 528 individual power packed wrapped coils; Ashley Edge "steel encased"; 2 perimeter rows of 13-gauge wrapped coils for edge support Stain-treated stretch cover 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