Boy these fit big.
These fit big. So big that I could not keep mine. I also noticed that they felt pretty warm, I thought that these would be nice and cool but that did not seem to be the case. They seemed that they would be a good water shoe and were pretty comfortable (but they were to big for me, about a half to full size to big). I was not a big fan of the laces, they seemed difficult to adjust. I think that I will stick with my Chaco's.