Birkenstock Boston Clogs. Our most sought-after clog, the Boston lends a fashion-forward edge to any style. 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. Classic suede upper. Suede footbed lining helps keep you comfortable. EVA sole is flexible and lightweight. Adjustable strap with metal pin buckle. Medium/Narrow width. Imported.