Face mask, Number of Layers : 3 Layer

During the COVID-19 pandemic, face masks, such as surgical masks and cloth masks, have been employed as a public and personal health control measure against the spread of SARS-CoV-2. In community and healthcare settings, their use is intended as source control to limit transmission of the virus and personal protection to prevent infection. Properly worn masks both limit the respiratory droplets and aerosols spread by infected individuals and help protect well individuals from infection.