Boston Oiled Leather | RegularBirkenstock's most coveted clog gets a heritage leather spin worthy of its icon status. Oiled leather only gets better with wear, giving each pair a unique, well traveled patina. With an original contoured footbed for support, it'll feel uniquely yours wherever you take it. Contoured cork latex footbed creates custom support with wear Oiled leather upper gives each pair a unique finish Suede footbed lining helps keep you comfortable EVA sole is