Use the Stamina® AeroPilates® Magic Circle to improve muscle tone, especially in the inner and outer thighs, arms and chest. This resistance ring features a steel core with a soft rubber cover and foam-molded, padded, nonporous grips. The Magic Circle can be used alone or added to your AeroPilates® reformer workout (reformer sold separately). Stamina AeroPilates Magic Circle Black - Hand Exer. Equip. at Academy Sports