2pcs маска + маска защитная панель рм2,5 маски фильтра activate углерода прокладка сменная пылезащитно дышащий мужской трехслойной горячий р

2pcs mask+ mask pad protective gasket replaceable dust-proof breathable unisex three-layer hot gasket.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.