The Pilates Magic Circle was created by Joseph Pilates to be a versatile exercise accessory you can use anywhere. The soft rubber ring provides resistance for faster, more targeted toning, improving muscle strength throughout the body especially in problem areas like the inner and outer thighs, upper arms, chest, even the pelvic muscles. This professional quality Magic Circle can be used alone or added to your pilates reformer workout. This Magic Circle features form molded grips to fit comfortably against your body with a nonporous, molded padding that resists moisture.