Birkenstock Boston Clog. 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. Cushioned Birkenstock soft footbed creates custom support with wear. 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.