Review on Teens Unleash The Fun With WALIKI 22"/55CM Hopper Ball - The Ultimate Bouncy Ball For Field Day! by Marc Sortijas

I ordered 4 of these teen size hop balls (2 yellow and 2 green) for my child's 3rd grade Field Day. After inflation, one of the green balls was considerably smaller- more appropriate for someone under 8. I placed a second order for a green ball, and this time it was the larger size. I had 120 3rd grade students (and a couple of teachers!) rotating through my game station in groups of twenty. The kids had a blast and relay raced on them outside for over an hour non-stop and the balls all held up amazingly well. Several adults asked where I got them and commented that this would make a really neat game for some of their church outdoor activities. So overall, sizing might be slightly inconsistent, but these are a very good quality hop ball.