birkenstock unisex arizona leather sandals birkenstock the arizona oily leather habana 2 strap upper from birkenstock with an orthotic footbed provides excellent arch and metatarsal support. durable eva outsole, cork footbed molds to each individual foot to provide a custom fit. this birkenstock sandal is a genuine classic, emphasizing the handcrafted and natural look of stylish sandals. a comfort legend and a fashion staple.