Updated version level: - Double spring. More durable and comfortable. - Wide and elongated pedals. Sturdy fixed foot pedal. Large sizes. Abdominal muscle exercise. The body is seated on the yoga mat, the legs are flat, the feet are placed in the fixed pedals, and the handles are held by the hands with the strength of the waist, three groups at a time. at a time, 20 in each group. Exercise arm muscles. The body rests on the yoga mat, the legs are flat, the feet are placed in the fixed pedals, and the handles are held by both hands with the strength of the arm, three groups at a time. at a time, 20 in each group. Exercises your arms and chest muscles. The body is seated on a yoga mat, the legs are bent, the feet are placed in a fixed pedal, and the handle is held by both hands with the strength of the arm, three sets at a time. at a time, 20 in each group. Contents: - 1 piece of equipment; double spring.