Medical masks, also known as surgical masks or face masks, are protective devices that are worn over the mouth and nose to protect the wearer from inhaling harmful particles, including germs and bacteria, or to prevent the spread of infections. They are typically made of a thin, flexible material, such as cotton or polypropylene, and are secured to the head with ear loops or ties. Medical masks are commonly used in healthcare settings, such as hospitals and clinics and they may also be worn by individuals in public settings, such as on airplanes or in crowded areas, to reduce the risk of respiratory infections or other illnesses. Medical masks are generally disposable and should be discarded after a single use to prevent the spread of infections.