From Marc Nolan, the Men's Magellan Leather Fisherman Sandals feature: Calfskin leather upper Calfskin leather lining Latex memory foam padded insole Rubber outsoles Imported. Styling Notes: Size 6 to 11 run large, go a full size dow Size 12 to 16 run true to size If you wear a half size, size down All Marc Nolan shoes are standard D width Select your true size if you prefer a wider width or up if you a half size