This version of the Boston clog, a classic BIRKENSTOCK model, comes with a shaft in soft, high-quality woolen felt. The clog can be adapted to all feet thanks to a strap on the upper edge of the shaft and a sturdy metal buckle. Anatomically shaped cork-latex footbed Upper: wool felt Lining: suede Sole: EVA Details: individually adjustable metal pin buckle Condition: Excellent (never worn)