SupplyAID’s KN95 5-ply foldable mask is suitable for adults’ daily travel protection. The KN95 mask is not to be used as a replacement for gas masks or as a medical mask. The mask cannot generate oxygen and should not be used in hypoxic environments. When used properly the mask provides a ≥ 95% filter efficiency and effectively protects respiratory health. Use the KN95 mask to protect against PM2.5, dust pollen and haze proof.