10Pcs KN95 Protective 5 Layers Face Mask BFE 95% PM2.5 Disposable Respirator Buy KN95 face masks online that are CE certified, genuine, and made in accordance with industry standards. 5-ply foldable KN95 masks have up to 95% filtration efficiency of non-oily suspended particles of 0.3-micron levels. Ideal for daily use, helping prevent the spread of germs and protect yourself from airborne particles, viruses, pollen, and other allergens. What is a KN95 mask? The KN95 face mask (commonly misspelled K95 masks) is a lightweight and comfortable respirator mask with ear loops and an adjustable nosepiece for secure fit and seal. KN95 masks are used in a variety of industries such as food processing, medical, hospitals, general manufacturing, heavy infrastructure, mining, oil & gas, and transportation.