Made by Pure2Improve and designed for yoga and pilates, this exercise ball is ideal for workouts at home or in the studio. The stability ball is perfect for improving your balance and stability. The virtually unbreakable, thick rubber walls provide excellent support and control. If the ball is too hard or too soft the effects on your core muscles will be reduced, but a hand pump is included to keep the ball at optimal pressure. You can use the exercise ball to train your core muscles, even if you only use the ball to sit on at your desk, or to perform dynamic exercises.