Quilted Polyester Tight-Top Surface 1 Responsive Foam Layer 0.9 Convoluted Foam Layer 8.5 individually wrapped coils Fabric liners above/below coils Fire resistant polyester barrier Unrolls and decompresses in 2-3hrs Overall Product Dimensions: 80'L x 76'W x 10'H Product Materials: No Assembly Required,weight capacity: 662 lbs, 1st layer: knitted fabric 1). FR220g fiber (white),2). 1' foam,3). 0.9' convoluted foam,4). 25g non-woven fabric,350g isolated pad,23cm Spring mattress,350g isolated pad,1). 25g non-woven fabric