I can't speak for the smaller sizes but I ordered a 13M, and as soon as I pulled these out of the box they immediately looked like they were a narrow version of an 11 or 12. After undoing all the laces I could just barely squeeze my feet into them. The bottoms and insoles were OK and didn't hit any pressure points on the bottom of my feet (which is why it's getting 2 stars instead of 1), but the rest of the shoe was extremely tight and there was no room for my toes, which made walking painful. I'm going to be returning them now.