GK Plaque Safety Mask. Certified fabric and design. The fabric complies with the requirements set for breathability and particle filtration capacity used in the framework of COVID-19. This mask is reusable untill five washing cycles. (LEVEL 3) It features the nasal clip and elastic straps. It is for general use intended to serve as a supplementary protection to social distance measures, which are fundamental for the control of COVID-19. Theses masks are not to be used by health professionals in the performance of their duties.