These shoes have been worn only a handful of times inside. Birkenstock Boston Clog in Mocha. The most sought-after clog, the Boston lends a Velvety suede gives the laid-back look classic, every season appeal. Featuring an additional foam layer for cushioning, the soft footbed offers extra comfort plus go-all-day support. Cushioned Birkenstock Classic suede upper. Suede footbed lining helps keep you comfortable. EVA sole is flexible and lightweight. Adjustable strap with metal pin buckle.