Generic Pilates Yoga 9" Purple Ball Fitness Over Ball Bender Package Include: fitness ball, inflation straw and plug. Exercise all the muscle groups; abs, arms, hips and more. Fortify and balance muscles while improving your overall fitness and posture. Great for Pilates, yoga, balance and core training, weight training, flexibility and resistance. This balance ball can be used for a variety of exercises including yoga, fitness training, and more.