These Birkenstock Arizona Birkibuc Narrow Fit Sandals are a classic and comfortable design. The Birkibuc synthetic leather upper provides a leather-like finish, and the contoured cork-latex footbed offers custom support with wear. The sandals have a suede footbed lining for comfort, and an EVA sole that is flexible and lightweight. They come with two adjustable straps with metal pin buckles, and provide a deep heel cup to cradle the heel and keep natural cushioning underneath the heel bone. There is also longitudinal and transverse arch support for stability and proper alignment, a raised toe bar to encourage natural gripping motion and more toe room for balance and correct foot alignment.