KN95 Face Masks. White, Bulk packaged. Non Medical. Included in FDA Emergency use authorization list. Manufactured by a certified manufacturer. Efficiency > 95%. Tested by NPPTL (National Personal Protective Technology Laboratory) 2 non-woven outer layer, 2 melt-blown inner layer, 1 non-woven cotton middle layer. KN95 masks are designed to offer more protection than a standard disposable 3-ply mask. Metal nose clip is fixed to the inner of the mask, so it won't fall off.