OP-Masken, or surgical masks, are protective face coverings designed to prevent the spread of infections during medical procedures. They are typically made from multiple layers of fabric that filter out bacteria and viruses, providing a barrier between the wearer and potential contaminants in the environment. These masks are commonly used by healthcare professionals, such as Ärzte and Pflegekräfte, to protect both themselves and their patients. In addition to their use in hospitals, OP-Masken have become widely adopted in public settings, especially during health crises like the COVID-19 pandemic, to reduce transmission of respiratory illnesses.