The Stamina® Ab / Hyper Bench (20-2020B) gives you terrific core strength, ripped abs and powerful back muscles. Work your upper and middle abs in four crunch positions ranging from flat to a 30 degree decline on the Stamina® Ab / Hyper Bench (20-2020B). The pull of a pin quickly and easily adjusts the angle of the bench to increase or decrease your workout intensity. Target your lower back muscles with standing hyper-extension exercises. The Stamina® Ab / Hyper Bench (20-2020B) has a thigh support that adjusts to fit your leg length, and the pivoting foam rollers hold your ankles securely so your body is aligned in the correct workout position.