Apparel & Accessories > Shoes Shoes > Flats in stock Boston Shearling-Lined Birkenstock in Suede/Shearling/Mink/Natural, Size IT 39: Attention: Birkenstocks—famously the most comfortable sandals ever—also come in clog form, made somehow even more comfortable with a cozy shearling lining and soft, supple suede. Upper: Suede; Footbed liner: Shearling; Sole: EVA Made in Germany.