Designed to provide an intense ab workout while eliminating strain on the lower back, the J-027 Vertical Knee Raise Machine is hard to beat for vacuuming the waistline. Easy and convenient step entry makes getting started a breeze. Thick, comfortable back pads and arm supports reduce fatigue and discomfort allowing you keep working on your abs and obliques. It allows the users to carry out isolated muscle enhancement workouts, improving body balance and posture as well as toning the muscles too with ergonomic features.