My 17 month old little boy easily wears a size 6/7, so I picked out a 7 to get us through Summer of 2013. The shoe showed lots of wear within the first few days. Everytime he wears them, I have to readjust his pinkie or big toe that has escaped from the strap. He has even lost his shoe a few times. The one good thing is that we have no foot funk which we have gotten with other sandals.