More Bounce to the Ounce! The best bounce in a foam ball that we have ever found; they bounce even higher than our high bounce balls. Soft enough to be nonthreatening, yet firm enough to provide a better bounce, these balls open up new opportunities in game play and skill development. When you want the most bounce for the ounce, get the MansionAthletics Best Bounce Ball. Excellent for racket and volleying activities. Set of 18 balls. SIZE: 3 1/2''.