About this item Our most sought-after clog, the Boston lends a fashion-forward edge to any style. Handcrafted for quality, oiled nubuck leather looks distinctly heritage, designed to age over time for a perfectly worn, one-of-a-kind look. Complete with legendary BIRKENSTOCK design elements, like a contoured cork-latex footbed for the ultimate in support. Contoured cork-latex footbed creates custom support with wear EVA sole is flexible and lightweight Adjustable strap with metal pin buckle