Supremely comfortable with sophisticated, crisscross straps, the Mayari redefines the thong sandal with a single toe loop. Birko-Flor® adds a smooth finish to the everyday favorite. Complete with classic BIRKENSTOCK design elements, like adjustable buckle closures and a contoured footbed for the ultimate in support.   Contoured cork-latex footbed creates custom support with wear   Birko-Flor® synthetic leather upper   Suede footbed lining helps keep you comfortable   Lightweight EVA sole   Two straps with adjustable metal pin buckles Upper material:  Birko-Flor® Birko-Flor® is a skin-friendly, tear-resistant and easy-to-care-for synthetic material which is exclusively used by BIRKENSTOCK. Insole:  Natural leather Natural leather can be recognized by its untreated surface. BIRKENSTOCK purposely does not treat surface grains and other characteristic features. BIRKENSTOCK uses sturdy leather with a thickness of 2.8 to 3.2 millimeters as upper material. Footbed material:  Cork Cork is a sustainable material extracted from the bark layer of the cork oak. This natural product is insulating and offers very good cushioning. Outsole:  EVA EVA (ethylene vinyl acetate) is a high-quality, very light, elastic material with extremely good cushioning. As a result, it smooths out slight irregularities in the floor an