защитный многоразовый fablack с carbon fliter перетяжка анти прокладка фильтра dust регулируемого amp; многоразовый 2 рм2,5 рот маски

protective reusable fablack with carbon fliter padding anti dust adjustable & reusable 2 pm2.5 s mouth mask.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.