Vivon iCoil 12 Inch Spring & Foam Hybrid Mattress, Cal King Comforting Poly Jacquard Fiber Quilted Cover 1.5 inch layer of Comfort Foam, 1 inch of Memory Foam, 1 inch of High Density Support Foam, 7.5 inches iCoil support base, 1 inch Foam Encasement CertiPUR-US certified foam Our patented compression technology allows our mattresses to be compressed, rolled and shipped in a box via FedEx/UPS