Build definition in your abdominals and back with the Perfect Fitness Ab Carver Pro. Featuring a kinetic engine that offers resistance on the roll out and assistance on the roll back, every ab and arm workout is amplified, maximizing muscle growth. The ultra-wide tread makes it possible to carve left and right, working your obliques, while the angled ergonomic hand grips activate arm and core muscles for a challenging workout every time. Features: – Ultra-wide ab roller wheel with built-in resistance to help maximize core workouts – Interior kinetic carbon steel spring offers resistance on the roll out and assistance on the roll back to activate abdominals and arms – Ultra-wide wheel tread offers stability for multidirectional exercises (left, right or center), and makes it easy to tailor workouts to be easy, medium, or hard – Ergonomic hand grips are angled to activate arm and core muscles; handles are removable for easy storage and transport – Includes high-density foam kneepad for superior comfort while working out

