This gym ball makes a great training tool for the taller athlete. Exercising with a gym ball will improve core strength, balance and coordination. This ball is also ideal as a birthing ball or for safe pre and postnatal exercising. Many of our customer also purchase this ball as an alternative seating option to reduce stiffening and discomfort of the lower back during long periods of sitting . PLEASE Search for our POWRX Gym Ball Training Charts ,for Beginners and Advanced Athletes.