Easy and convenient to use. FDA Certified And CE Approved KN95 Face Respirators Masks. The face masks filteration efficiency Of 5 layers will help block out PM2.5 air pollutants like allergens, virus, bacteria, dust & droplets. Allows for at least 95 percent bacterial filtration efficiency. Suitable as Covid 19 Mask. Ear loop design with welded dual point attachment helps provide a secure seal. Cushioning nose foam and adjustable nose clip helps provide a custom fit and secure seal. Reduces inhalation exposures to certain airborne biological particles. Compatible with a variety of protective eye wear and hearing protection.