Birkenstock Boston Oiled Leather Sandals have become one of the most popular styles, integral to everyday outfits. Made from oiled Nubuck leather and featuring EVA soles, the Boston promises comfort and stylish combinations. Oiled Nubuck Leather, Suede Lining, Narrow Fit, Adjustable Strap, Contoured Cork-Latex Footbed, EVA Sole Unit, Made in Germany.