content: They fit my 18 month old son great. The Velcro is kind of a pointless feature. The strap that is suppose to stick didn't even really reach when the floats are fully inflated.I have a problem with the valves not sealing and letting air out quicker than I can plug them up. I reported the problem to the company, and they sent a replacement pair immediately. Unfortunately, I had the same problem with the second pair. I think it may just be the way they're made.