Birkenstock Arizona Men's Open-Toe 'Cork Footbed' 2-Strap Sandal In Stone Birkibuc Upper birko-flor upper with acrylic and polyamide felt fibers (not leather). Birkenstock Arizona - Birkibuc Men's Stone Sandals. Buckle closure for an adjustable fit. Raised toe bar is designed to encourage the natural gripping motion of your feet, exercising your legs and aiding circulation. The suede lined, contoured footbed will mold to the shape of your foot creating a custom footbed that supports and cradles you each and every step. Made in Germany by Birkenstock.