Boy i can't tell you how much fun i had with super balls, they bounced into my life when i was going to R,B. Hunt Elementary School where you had good surface to bounce them, concrete and asphalt. I had big collection at one time, all sizes from the normal size to the mini super balls in all colors. Neat tricks like karate chopping them to make them bounce from side to side. I had what i think was a rare super ball made by Marx Toys which was a weird blue color but the best ones were from Wham-O. I think still make them, wish i knew what happened to mine.