3510 Body Extension is a medical exercise unit that has been designed to target the glutes. It is a single function exercise unit which is equipped with an easy access feature. You simply flip a switch and the lever arm move down for easy access which makes it suitable for a wide range of users (including elderly). The back support is ergonomically shaped both for comfort and also to take the load off the spinal column during exercise. Some of its safety features include: resistance adjustment, free exercise switch, belt and easy access hand grips.