d8ub fa-dust фильтр маска для лица рм2,5 активации углерода smoke открытый indoor регулируемый многоразовые, с 2 маска pad для рм2,5 велоспо

d8ub fa-dust smoke outdoor indoor adjustable reusable with 2 mask pad for pm2.5 cycling mask.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.