If you are a first-time purchaser, note that these run a bit long for kids (particularly the ones with the thin soles) and only come in whole sizes. The adult sizes are listed as "youth" sizes, so take the youth size and add two to it to get the adult size. For example, a youth 6 is the same as an adult 8. You also have options as to style and sole material. The traditional soles are quite thin and hard, though they now make several styles with cushier urethane soles for kids. We have owned and loved both types. There are also different styles of uppers (all made of the same leather), from the traditional crossed straps (original) to the simpler solid toe buckle (surfers) to the ones with the little heart cut-outs (sweethearts) and more. Find all of the styles that ship for free from Amazon here.
Just today I wore mine to my kids' swimming lessons and they were perfect in the shower room (where they got soaking wet as I helped my kids wash their hair). SaltWaters prevail once again!