Birkenstock Arizona Sandals. The Birkenstock Arizona is a genuine classic that has been delighting wearers with its timeless design for decades. The two-strap model fits kids’ feet perfectly – even during boisterous play! This popular sandal has been given an update in a new material, with a vegan version now available. It is entirely free of animal products, as verified by independent testing laboratories. The upper is made from the skin-friendly, hard-wearing synthetic material Birko-Flor® in a sophisticated nubuck look which boasts a texture and color that could almost be mistaken for real leather. Imported.