Designed to provide optimum rubber strength for women to trainThe ring strengthens the muscles of both arms and is effective for improving your overall abilities.In addition, the diameter is not too large, which will improve the effectiveness of your exercise.Depending on your posture of exercise, you can train your back, arms, legs, and other body muscles evenly.This item can effectively train your inner muscles by holding it in your hand or pinching it on your legs.It can be used for shaping up areas such as your back, upper arms, abs, bust, waist, thighs, and shoulders, and can be used for muscle training such as yoga and stretching.