Birkenstock Boston Clogs. Tiny icon, big time support. The Boston clog is engineered for kids in durable Birkibuc®, made smooth and easy to clean. With an original contoured footbed to give them play-all-day support. Contoured cork-latex footbed. Birkibuc® synthetic upper. Suede footbed lining helps keep you comfortable. Flexible EVA sole. Adjustable strap with metal pin buckle. Imported.