pm2.5 pm2.5 активированный уголь pad 5layers вставка защитный коврик анти haze рту заменяемое сек для маски gga3293-1

adult dustproof anti dust pollution full mouth mask breath washable reusable muffle protective with 10 pad features: 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.