WALIKI TOYS Hopper Ball For Kids Ages 7-9 (Hippity Hop Ball, Hopping Ball, Bouncy Ball With Handles, Sit & Bounce, Kangaroo Bouncer, Jumping Ball, 20 Inches, Red, Pump Included) EASY TO INFLATE: Double-action hand pump included ($5.95 value) with your Hopper Ball. Inflates easily in 5 minutes PERFECT SIZE: 20"/50CM is the correct size for ages 7-9.