к mask 3-layer mask маска pad замена универсальный дышащий pad рм2,5 сменный фильтр с 5 activate углерода мат

k mask 3-layer mask mask pad replacement universal breathable pad mat.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.