This highly efficient air filtration mask is designed to protect the wearer against particles found in air pollution. With a GB2626-2006 KN95 certification standard, this ATC MASK™ activated carbon air filtration mask provide FFP2-class protection by reducing the wearer’s exposure to PM2.5, dust, allergens, smoke and particles found in air pollution. It also reduces smell and odor, and can filter more than 95% of all bacteria and germs.