Reduces fidgeting and increases concentration with an original weighting feature that prevents the ball from rolling, keeping it in place when not in use. Active seating improves focus and provides an outlet for excess energy alleviating anxiety, stress, and boredom. Builds core strength and a healthy posture. Anti-burst, slip-resistant high-quality material. Suitable for kids of adults up to 168 cm (5'6”) tall. Latex free. Includes Pump, 2 stoppers, measuring tape, and a stopper remover.