BIRKENSTOCK Arizona BS Black 0551251. Birkibuc – a durable, synthetic upper material with a nubuck leather-like texture and a soft backing Softbed Foot. Contoured cork footbed conforms to the shape of your foot and features pronounced arch support, a deep heel cup, and roomy toe box; lined with suede Lightweight EVA sole for cushioning and shock absorption Avoid extreme heat “Made in Germany”