I have a wide foot that would normally fit a 9.5 or 10. If that describes you, take DEFINITELY 10 out of 9.5 instead. I thought a 9.5 would be fine as it's New Balance and one of their wide footed boots that fit me, but in this case it would be better if there was a little more room. They look great and seem to be of great quality but they fall a bit short of the expected fit for this type of shoe.