The Gunnar Peterson Core Secrets Exercise Ball is a versatile fitness tool perfect for various muscle groups including chest, legs, glutes, shoulders, arms, back, biceps, abdominals, thighs, and full body. Made of durable rubber material, this exercise ball can be used for home, semi-commercial, or commercial purposes. It comes with a convenient inflate/deflate pump and 6 DVDs to guide users through different fitness routines such as gym training, full body workouts, and yoga. This exercise ball is a great addition to any fitness plan for achieving a well-rounded and strong body.