Polyester jacquard cover with 1" of memory foam designed for maximum comfort * Padded second layer features 1/2" memory foam and 1.5" pressure relief super soft foam * 7.5" base layer of individual, heavy gauge metal springs wrapped in foam provides durability for increased motion separation. * Bi-Fold® Box Spring Folding Foundation is made from heavy gauge metal featuring maximum edge firmness. * No assembly required- remove from box, unfold, and lay your mattress on top.