If your feet are wider (D) Medium I would recommend ordering 1/2 size to 1 size. more than you would wear in quality leather shoes. If you take out the insoles like me and put in orthopedic insoles, I would go up a size. I usually wear a 9 1/2 but even after removing the insoles they fit very snugly on a thin sock as I have a wide foot. Next to. Those are pretty good shoes. Average price. I've had the shoe stretchers for 2 weeks and they really don't stretch at all.