Innerspring Mattress- 36 X 80 X 6 (ships Fedex Ground) Rolls up and is UPSable * 35 x 80 x 6 * An innerspring mattress that offers fluid proof protection * Uses a 6 combination of low profile innerspring surrounded by high density foam * Encased by a ProFlex OXTM fluid proof nylon cover * Full 3-year warranty against defects in materials and workmanship * Rolls up unlike typical innersprings *