Ab roller wheels to exercise the muscles on your abdomen, back, arm and shoulders. Ideal for both home and gym workouts. Good for your body: fit your hands and feet comfortably. Stretching bands can keep your body in better shape, can withstand strenuous exercise and improve exercise range, enhance muscle recovery, and reduce the risk of injury. Our heavy-duty resistance loop bands are made of 100% natural latex-free of TPE – and come in 5 varying resistance levels. This makes them perfect whether you are just starting to workout or a seasoned workout warrior. Supplied with a thick EVA anti-slip and environmentally friendly knee pad mat, protecting your knees from pain and grinding. Scientific grip design: ergonomic, comfortable grip, Ring texture: non-slip texture, easy to hold when you jump rope， Thick foam: breathable, sweat-absorbent, light, non-slip, not easy to get rid of.