The Super Birki is an incredibly versatile shoe, perfect for everyday wear. This shoe is a fun splash friendly clog, featuring a shearling lining for extra warmth. The upper is made of polyurethane (PU), it is flexible, and water- and dirt-repellent for easy care. Anatomically shaped footbed Upper: polyurethane (PU) Footbed lining: shearling Sole: polyurethane (PU) Details: flexible, water- and dirt-repellent “Made in Germany” Upper: Polyurethane Polyurethane, also known as PU, is a synthetic material ideally suited for use outdoors. The material is water-repellent and dirt-resistant and extremely easy to care for. Insole: Microfibre Footbed material: Cork Outsole: Polyurethane