лот 5 слоев взрослого ребенок маска колодка insert защитного противоскользящий коврик haze рот заменяемых сек рм2,5 активировать угольный фи

lot 5 layers adult child mask pads insert protective mat anti haze mouth replaceable s pm2.5 .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.