A collaboration of Rick Owens™ x Birkenstock® the Rotterdam Sandal features an anatomical cork latex footbed covered in a smooth premium nappa leather. Leather upper. Slip-on with extended adjustable hook-and-loop and buckle closures. Open-toe silhouette. Leather insole. Other outsole. Imported. This item may ship with an attached security tag. Merchandise returned without the original security tag attached or a damaged tag may not qualify for a refund. Weight of footwear is based on a single item, not a pair.