Apparel & Accessories > Shoes Shoes > Flats in stock Birkenstock Arizona Big Buckle in High Shine Black Leather, Size IT 36: Behold: the world’s most comfortable pair of sandals. These legendary Birkenstocks come in ultragleamy jet-black leather with jumbo gold-tone buckles. And they’re equipped with an extra layer of cushion in the cork sole, meaning each step feels like you’re walking on air. Upper: natural leather; Footbed; cork; Insole: piumato leather; Sole: EVA Made in Germany.