"I ordered these shoes on the whim, because the colors looked really cool. I got a 7.5 which is my Sperry's size. I was worried it wouldn't fit, but to my surprise the first day I wore it, it first perfectly AND I did not have to deal with any heel rubbing/toe crowding. Unlike my Sperry's that need a week or two to break in and adjust my feet to, these shoes DO NOT NEED ANY FORM OF BREAKING IN. Just slip and go, as long as you get the right shoe size."