The iSwing is made from materials strong enough to hold hundred of pounds. The luxurious padding around the molded seat and the ropes gives added comfort to your lower back, pelvis, and legs. The weight of your body is supported by your hips, eliminating the strain on the ankles and knees. You can perform sit-ups, pull-ups, leg lifts, or just "hang in" and stretch your back, shoulder, and hamstring muscles. Instructions are included to get you started right away enjoying a more flexible spine, reduced stress, and better health. Supports 225 pounds. Weighs six pounds.