Wikipedia: Wikimedia Foundation, Inc.: Super Ball - Wikipedia

Summary

The Super Ball, a highly elastic toy created in 1964 from a special synthetic rubber, became a massive fad in the 1960s. Its extreme bounciness, which can send it soaring incredibly high, is due to its unique composition and manufacturing process. Interestingly, the term 'Super Bowl' for the championship football game was coined by Lamar Hunt after watching his children play with this very bouncy toy.