This exceptionally sophisticated yet highly casual version of the Boston clog, a classic BIRKENSTOCK model, comes with a shaft in soft suede. The robust and extremely lightweight EVA sole is very flexible, too. It facilitates a rolling motion that is good for feet and body. Anatomically shaped cork-latex footbed Upper: suede Lining: suede Sole: EVA Details: clog with strap and an individually adjustable metal pin buckle Heel shape: flat