This jumping Ball is children's favorite playmate! Your little ones will learn balance and coordination while riding on the Ball and having fun! Safe to play! The Jumping Ball can be inflated to height of 40 cm/ 19 inches with a regular hand. Recommended Ages: 2 Years +. Children under 3 years old should be under direct supervision of an adult. Easy inflation: Take out the inserted white plug (air stopper) from the hole on the Ball belly; insert the tip and inflate the hopper to good size, and then replace the white plug back into the hole quickly. Bounce! Features: Stable Space Hopper, Bouncy Ball. Safe to use.It is delivered deflated. Age group 3+. Age under 3 should be under direct supersion of an adult. Easy inflation: Take out the inserted white plug (air stopper) from the hole on the Ball belly; insert the tip and inflate the hopper to good size, and then replace the white plug back into the hole quickly. Bounce!