Man Designer Anti-dust Cotton Mask Unisex Protective Masks Woman Wearing Black Fashion Luxury Facemask

2 1 PCS K Mouth Mask Outdoor Protective Faer 95% Filtration Mask Fog Dust Pads t.1.The first layer: high efficient filter cloth filter the dust of micron.2.The second layer: meltblown cloth to filter industrial pollutants, automobile exhaust, second-hand smoke pollen allergies.3.The third layer: high efficient filter cloth filter benzene and a smaller function of filtering dust microns.4.The fourth layer: activated carbon cloth filter density, sma.