This cloth-made reusable face mask has 3 layers. They have an outer layer with a repellent finish, an inner layer with a repellent finish plus an antibacterial treatment to prevent the lodging and proliferation of viruses, with an efficiency of 87.8%. And an intermediate layer with a metal nasal protector that ensures the shape of the mask and allows better breathing. All this is in compliance with the recommendations of the World Health Organization and according to the Declaration of Conformity. These masks are intended to serve as supplementary protection to the social distancing measures necessary for the control of COVID-19. Masks are made in Portugal. Certified by the CITEVE institute Wash at 60 degrees