WawaVita Anti-Burst Gym Ball-Yoga Ball/Balance Ball/Fitness Ball 65cm and 75cm Exercise ball/Yoga ball workout kit Anti-burst yoga ball can improve the balance ability and be used in rehabilitation training. Inflation instruction: Take out the inserted white plug (air stopper) from the ball, insert the tip of the pump and inflate the ball to good size, then replace the white plug back into the hole quickly. Comes with instruction sheet, foot pump, and a high-quality, anti-burst Balance Ball 75CM Black