KN95 - 5 Layer Face Mask (50 pcs) black – Filtration>95% with Comfortable Elastic Ear Loop | Non-Woven Polypropylene Fabric, Protection for Essential Workers. About this item Hook and Loop closure This KN95 face mask is manufactured by a certificated manufacturer. The filter efficiency of this KN95 mask is tested by NPPTL (National Personal Protective Technology Laboratory ) then prove it is over 95%, which can protect you in the critical time. 5 Protective Layer - Our breathable face masks are made of high quality non-woven fabric. 2 skin-friendly non-woven outer Layers makes them comfortable to wear. 2 melt-blown inner filter layers and 1 non-woven Cotton Middle Layer absorbs the moisture from the breath, the KN95 mask is designed to offer more protection than a standard disposable 3-Ply mask. Protective Core - The inner layers are made of melt blown cloth for the filtering function. These ultra-fine fibers with unique capillary structure makes the melt blown cloth having good filtering and shielding function. KN95 have 2 layer 95+ level melt-blown cloth, which has a smaller fiber diameter and a higher filtration rate than ordinary disposable masks. KN95 masks provide extra protection to you. Perfect mask for shopping, public transport, bus terminals, shopping malls, parks and busy city streets.