The Birkenstock Sydney BS Synthetic Unisex Sandal combines fashion and functionality with two simple straps for a stylish, comfortable fit. Now available in a vegan version, it’s made from a skin-friendly, synthetic material with a velvety feel, completely free of animal products. Premium synthetic upper for durability. Soft microfibre lining for comfort. Anatomically correct, microfibre footbed for foot support. Two straps, each with an individually adjustable metal pin buckle. Durable EVA sole for grip and traction.