одноразовая face pad 3 слоя дышащий маска фильтрующий защитная маска рот замена pad для взрослых детей

disposable face pad 3 layers breathable protective mouth mask replacement pad for adult kids 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.