набор рм2,5 анти haze рот маска заменяемое 5 слоев нетканые взрослые дети дети активированный уголь фильтр сек площадку для маски pad прокла

set pm2.5 anti haze mouth mask replaceable 5 layers non-woven adult child kids activated carbon s pad gasket 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.