famask pad активировать угольный фильтр не ткать рм2,5 3 слоя дышащих внутренней замены мата для кожи прокладки белого k для k famask

famask pad 3 layers breathable inner replacement mat skin friendly gasket white k for k famask.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.