The Super Birki made from water-resistant and dirt-repellent polyurethane is also oil-and grease-resistant. This extremely resilient material is washable to 80° Celsius and can be efficiently disinfected. Its resilience and its hygiene properties make it ideal for kitchens, medical environments, and the food industry – while it can equally serve as a practical garden clog. The anatomically shaped cork-latex footbed is lined with a moisture-wicking fabric. It can be removed for easy cleaning and is washable to 30° Celsius.

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.