Birkenstock depict natural materials in their refined eco-friendly aesthetics. These Boston shearling suede clogs in black are made from a natural lambskin footbed via an EVA design.• Upper: Suede With Shearling Lining • Footbed Lining: Shearling• Fit: Regular• Sole: EVA• Strap Lining• Details: Shearling, Adjustable Metal Pin