Sleek black leather mules. Comfortable and stylish. Perfect for casual wear, in excellent condition. The BIRKENSTOCK Boston clog is a veritable classic that can easily be worn all year round. Here, the classic comes in an exquisite, particularly high-quality version. The exquisite footbed is fully lined with soft piumato leather, making it exceptionally comfortable. The upper is made from high-quality aniline leather. Anatomically shaped cork-latex footbed; exquisite Upper: aniline leather Footbed lining: piumato leather Sole: EVA Details: strap with an individually adjustable metal pin buckle There are a few scuff marks on the heel (see photos).