Please be kindly noted，the listed product is produced and distributed abroad and subject to the laws of its country of origin.
Function:Dust proof, Flu, haze, dust, pollen, particulate matter, PM2.5, etc.
3 layers! With bamboo charcoal technology ,much higher quality than other normal mask !
Quality:5A quality Layers of Protection: --SS Non-woven Inner Layer
Package include: 1x mask with retail package(include 50pcs in it)