Women's Birkenstock Boston Soft Footbed - Iron Oiled Leather (NARROW) The BIRKENSTOCK Boston is a veritable classic that can easily be worn all year round. The Boston has a legendary status thanks to its sophisticated, individual design. The upper is made from extra thick, oiled nubuck leather with an open-selvage finish. DETAILS: Anatomically shaped cork-latex footbed Upper: oiled nubuck leather Footbed lining: suede Sole: EVA Details: one strap with an individually adjustable metal pin buckle Made in Germany Birkenstock is committed to environmentally friendly operations. We constantly work to improve production processes, products, packaging and logistics.