1.TARGET AB MUSCLE GROUP - Rectus abdominis, abdominal oblique, lumbar muscle and so on by working out the exercises such as hanging leg raises, hanging trunk rotations, hanging oblique knee raises. 2.COMFORTABLE TO USE - Comfortable, sweat-resistant foam cushion elbow supports, Ability to exercise safely and effectively. 3.ADJUSTABLE - The height can be easily adjusted ,so it is suitable for various scenes. 2mm thick webbing is enough to withstand large people. 4.SIZE - The adjustable height is 45cm/17.72in - 70cm/27.56in, The pads are about 15cm/5.9in in width and about 1cm/0.39in in thickness.