Yoga Ring Pilates Ring Magic Circle Portable Fitness ToolHome Fitness Gym Equipment Yoga Training Ring Pilates Firm and Durable This yoga ring back stretch is made of hard PP material. It will not deform or break after repeated uses. Two pieces available in the package enable you to train two arms, calves, feet or legs at the same time. Human Curve Design Including 48 massage points. It is easy to touch every tiny part of the body, and it can massage deep into the muscles, and use its own weight to perform