Birkenstock Unisex Arizona Soft Footbed - Leather (Unisex) Summer Breeze Nubuck Sandal Cork^Jute^Nubuck Imported Birkenstock&reg; Size Chart Please be advised that the Birkenstock&#174; Narrow width accommodates both traditional narrow and medium widths. Click here for more information about Birkenstock's widths. Classic two-strap sandal for enhanced comfort. Available in a variety of leather uppers. Birkenstock uses the term Waxy leather and Oiled leather interchangeably and may arrive marked as either. Anatomically correct footbed is crafted from 100% renewable and sustainable cork. Raised toe bar encourages the natural gripping motion of your feet, exercising your legs and aiding circulation. The soft footbed features a foam layer inserted between the cork layer and suede liner of the original Birkenstock footbed. Microscopic air bubbles cushion y