yw4x1 защитный фильтр рм2,5 лица черный с пыле углерода fliter перетяжка dust анти регулируемое amp; многоразовый рм2,5 маска ткань 2 fil

yw4x1 protective face black with dustproof carbon fliter padding dust anti adjustable & reusable pm2.5 mask fabric 2 fil 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 dens