... N95 mask,nonwoven mask, dust mask,spot goods,close out wearing a mask to protect yourself,which is much better than nothing. ... materials.3.adjust the bandage strip and the built-in bandage foam cushion to adapt to various face-shapes with comfortable ... for sanding, sweeping, grinding medicine, disintegration projects, cement,agriculture and animal husbandry, cutting dust, pollutes from heavy metal.7. ...