From Marc Nolan, the Men's Montana Leather Moc Toe Derby Oxfords feature: Calf leather upper Lace up closure Full calf leather lining Memory foam insole Rubber lug outsole Imported. Styling Notes: Size 6 to 11 run large, go a full size down. Size 12 to 16 run true to size. If you wear a half size, size down. All Marc Nolan shoes are standard D width.