The Champion Sports Fitpro Hop Along Pon Pon Ball is a fun way to get a cardiovascular and muscle toning workout. Riders simply sit on the ball, hold on, and bounce. These balls offer superior elasticity and strength, and feature an exclusive handle fitted directly into the mold of the ball, so your ride is stable. The Hop Along Pon Pon Ball, available in three sizes, is a fun activity for all ages! *Rebound elasticity and strength *Exclusive plastic handles are fitted into the mold of the ball which allows for maximum control and safety *42 cm *16.5" Diameter *Yellow *Recommended Height: Under 5' ft.