Set of 9 Vibrant Jumping Hopping Balls: experience endless fun and excitement with our set of 9 bouncy balls for kids that come in bright, attractive colors such as red, blue, green, pink ...

The typical bouncy ball, originally made of the synthetic polymer Zectron and marketed under the name Superball by toy company Wham-O, has a remarkably high coefficient of restitution of 0.92 ...