I purchased a size small for my son who wears a size 1 shoe. Size chart says Small=13.5-2 kid size. We've been at the pool for only AN HOUR, & his big toe ripped the seams, on both sides. Now, it's ripped completely through mid foot. A complete piece of crap! Which is unfortunate, because we received so many compliments, & I told at least 8 people where I got them. Wish I could track them down & warn them now :(