The Super-Birki is a compact shoe made from water-resistant and dirt-repellent polyurethane which is also oil-and grease-resistant. This extremely resilient material is washable to 60°C (Removable footbed 30°C) and can be efficiently disinfected. This compact shoe made from water-resistant and dirt-repellent polyurethane is also oil-and grease-resistant. This extremely resilient material is washable to 80 degree Celsius and can be efficiently disinfected.