сумка сменная anti-fog защитные одноразовая хлопок безопасности anti-dust пыльца маска pad pm2.5 4ahp

disposable mask 3 layer earring dust mask covered with 3 layers of non-woven cloth dust mask soft breathable outdoor pad pm2.5 b11 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 filte