An elegant model designed with slim, stylish crisscrossed straps, the Women's Birkenstock Franca Footbed Sandal. Nubuck leather upper in a casual footbed sandal style with an open toe Slide entry Three adjustable straps with buckle closures Smooth lining, classic Birkenstock footbed featuring pronounced arch support and a deep heel cup Flexible, shock absorbing EVA outsole Birkenstock is committed to environmentally friendly operations. A high proportion of the natural materials that we use are from sustainable sources: cork, natural latex, jute, leather, wool felt, copper and brass are among our most important materials.