Goplus Adjustable Decline Sit Up Bench for Exercise, Foldable Curved Slant Bench with High Density Foam Cushioned Seat5 Adjustable Heights: The sit up bench can be adjusted into 5 different heights to satisfy the customized workout needs of different groups, such as beginners and professionals. 5 position adjustable heights also make it an ideal training equipment for people of different heights. Multi layered Cushion: The back cushion is designed with a multi layered structure, including PU leather, high density foam, composite plate, non woven fabric, and black