The Birkenstock Boston Oiled Natural Leather Clog Sandals are made with care and precision. The oiled nubuck leather looks vintage and stylish, with a unique patina that develops over time. It has a contoured cork-latex footbed to give your feet the support they need, and a suede footbed lining for extra comfort. The EVA sole is lightweight but flexible, and the adjustable strap with metal pin buckle ensures the perfect fit. The deep heel cup cradles your heel and keeps your cushioning in place, while the longitudinal and transverse arch supports keep your feet in proper alignment. The raised toe bar encourages natural movement and helps stimulate circulation, and the roomy toe box prevents your toes from being cramped.