I bought a size 12 medium width and the boots fit perfectly. Not to loose or too tight and i have a slightly wider foot, though wide fit is too loose for me. I had tried a couple other boots by Ariat and the fit was too small or too narrow. These are perfect for everyday use and are nice enough for a night out. The only problem is that the left boot had a small scuff in the toe are. Other than that i'm satisfied.