. Features. Good to Improves muscle tone of the upper inner and outer thighs, arms, lower body, upper body and core. Stretch the skeletal ligaments to enhance flexibility. Relax the muscles in your back, relax mental pressure, relax back tension, massage and relax. Durable and strong in practicability, an essential tool for Pilates. A perfect accessory for Yoga or Pilates stretching training. Suitable for home fitness exercise bodybuilding workout. Increase the floor motion intensity and exercise the body's muscles. It is very useful for inner thigh, thigh, chest and even pelvic muscles.