Box for semi-orthopedic mattress KING Brand FLEX, created and designed for those looking for a restful rest, combines a Jacquard fabric with 40% cotton 60% polyester. With a pleasant comfort effect, this mattress is synonymous with strength and durability. * Does not include mattress * Representative Image of the Final Product Brand FLEX Model FLEX-BOX SEMI KING Dimensions 193 cm x 203 cm (76 "x 80")