Birkenstock Ladies Shoes. SKU - 1001140-MINK. Color - Mink. Birkenstock Ladies Mink Boston Shearling Clog. The Boston clog features an anatomically formed cork and latex footbed for optimal comfort. It has a classic suede upper and a genuine shearling footbed lining for a cozy, warm feel. The flexible EVA sole offers durability and support, while the adjustable strap with a metal pin buckle allows for a personalized fit. Made in Germany. Please visit the brand website for sizing information.