Birkenstock depict natural materials in their refined eco-friendly aesthetics. These Boston shearling suede clogs in black capture the German label's preference for study designs. Engineered in high quality suede with a natural lambskin footbed and strap lining. The sole is EVA and helps provide sturdiness and comfort. • Upper: Suede With Shearling Lining• Footbed Lining: Shearling• Sole: EVA• Details: Shearling, Individually Adjustable Metal Pin