Birkenstock Profi-Birki Clogs | Terrain。NEW (EU size 48/men size 15) The Profi Birki is a popular choice for healthcare, hospitality, and gardening due to its durability and safety features: Material: Made from a single piece of fluid-resistant, lightweight polyurethane (PU). Safety: Features a non-slip, oil-, and grease-resistant outsole. It is also certified occupational footwear. Design: A closed back provides a secure fit, while the raised heel and extended front protect the entire foot. Maintenance: Both the clog and its removable anatomically shaped footbed are washable and can be disinfected at high temperatures (up to 175°F for the clog).