AppleRound Space Hopper Ball with Air Pump: 22in/55cm Diameter for Ages 10-12, Hop Ball, Kangaroo Bouncer, Hoppity Hop, Jumping Ball, Sit & Bounce Inflated size appr. 55cm/22in in diameter. Durable Grab n' grip handle. Ideal for indoor and outdoor use. Age group 10-12 years. Maximum sustainable weight of 200 pounds. Includes a two-way hand pump. Ball is delivered deflated. Presented in color box and ideal as a gift. Durable & Safe: Contains no US banned phthalates and heavy metal elements. Conforms to the safety requirements of US CPSIA & ASTM F963. Safe to use. 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, and then replace the white plug back into the hole quickly. Bounce!