Presenting to you the McCons KN95 (5 Layer) – GB2626-2006 Mask (Single Piece Packet). It comes with Ultra-fine filter layer effectively prevents PM2.5 particles from entering. PM 2.5 filtration with an efficiency rate of up to 95%. Non-woven fabric for safe filtering, soft fabric, breathable, comfortable. Filters out dust, bacteria, smoke & pollen.