AppleRound Space Hopper Ball: Green, 22in/55cm Diameter for Ages 10-12, Pump Included (Hop Ball, Kangaroo Bouncer, Hoppity Hop, Sit and Bounce, Jumping Ball) Inflated size appr. 55cm/22in in diameter. Durable Grab n' grip handle. Maximum sustainable weight of 200 pounds. Age group 10-12 years. Ideal for indoor and outdoor use. Age under 3 should be under direct supersion of an adult. Includes a two-way hand pump. Ball is delivered deflated. Presented in color box and ideal as a gift. Contains no US banned phthalates and heavy metal elements. Conforms to the safety requirements of EU EN71, 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!