The BIRKENSTOCK Boston is a classic that can easily be worn all year round. The Boston has a legendary status thanks to its sophisticated, individually adjustable design. With its additional foam layer, the soft footbed offers extra comfort all day long. The upper is made from extra thick, oiled nubuck leather with an open-selvage finish. Original BIRKENSTOCK soft footbed; anatomically shaped. Upper: oiled nubuck leather. Details: one strap with an individually adjustable metal pin buckle.