Spring Coil Mattress,Pillow Top ,Pocketed Coil, Orthopedic Twin Size Mattress with 4-Inch Box Spring, Acura Collection Pillow top medium firm matters the perfect blend of support & comfort Mattress has Pocketed Coil Technology for conforming back support Orthopedic Type Mattress handles & wheels on the box to conveniently transfer mattress Box spring is fully assembled