KN95 Masks - 5pck Non Medical Mask Advanced environmental protection non-woven fabric, multilayer fabric can effectively resist fine particles (PM2.5) and bacteria in air pollution.   Seamless fit against mist. Seamless fit improves the protection function of the mask to prevent the eyeglasses from fogging due to exhalation. Fold in half for a 3D look. There is  a pair of fold lines in the middel , no glue bonding, the mask is strong and durable and the shape is more 3D.