Very durable. Faded brand on insole showing slight wear but otherwise so much life left and still looks almost new all over! Selling this 37 since I realized I should have gotten the 38 (which I now happily own 😬) ☀️ 🏖️ 🌊 Described from website: The BIRKENSTOCK Arizona is an icon with its timeless design. Modeled on the cork original, this sandal is made from ultra lightweight and highly flexible EVA. These sandals are shock-absorbent, waterproof, and skin-friendly. Wear them at the beach, in the garden, or in wellness and spa areas. It's the perfect addition to your classic BIRKENSTOCK sandals. • Anatomically shaped BIRKENSTOCK footbed made from EVA • Upper/footbed lining/sole: one piece molded EVA • Details: two straps, each with an individually adjustable pin buckle; waterproof, washable, ultra lightweight • “Made in Germany”