The legendary two-strap design from Birkenstock; the Arizona EVA. Modeled on the cork original, this sandal is made from ultra lightweight and highly flexible EVA. These The legendary two-strap design from Birkenstock; the Arizona EVA. Modeled on the cork original, this sandal is made from ultra lightweight and highly flexible EVA. These sandals are shock absorbing, waterproof, and skin-friendly. Wear them at the beach, in the garden, or around the gym and after workouts. It's the perf