1 шт 4 слоя детских к маскам фильтр рм2,5 famask рм2,5 роты маски pad дыхания valve anti мутность дышащие масок против пыли рта муфельного f

1 pcs 4 layers kids k famask pm2.5 mouth mask pad breath valve anti haze breathable mask anti dust mouth-muffle fachildren.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.