The shoe size is "True to size" and comes in two widths, E and F. E is the standard width, and F is the wide width. For loafers, it's usually necessary to go down half size from your regular lace-up shoe size. We automatically account for this size reduction during production, so you can choose your regular lace-up shoe size. Foot length is one of the reference factors, and other dimensions like width and instep height also influence the final size selection. If you have any questions regarding the size, please feel free to contact us.