N95 Vs. KN95 Mask: 12 Things to Know Before Buying - Terry ...
Jan 02, 2021·KN95 mask. KN95 masks are made from nonwoven fabric; hot air cotton and melt-blown fabric. The masks are generally multi-layered (they usually feature 5 layers, as recommended by the WHO and FDA, while some low-quality versions have 4 layers).The nonwoven fabric in the masks is waterproof and hydrophobic, as well as skin-friendly because of the hypoallergenic materials.