I purchased an 8.5 M I wear an 8M and they were way to small. Toe box was narrow and short. I'm not sure why the difference in sizing I have found lately but it is irritating.  These shoes don't offer much in the way of cushion. I am not a runner but I can't imagine these being comfortable for running. They are not attractive in person but online I thought they were nice looking. I can't recommend them.