Light weight Material: Chinlon, Nlyon
Function: Protection against sand and dust.
Adjustable magic paste closure, one size fits most adults(unisex)
Charcoal Filter (Total 5 layers) Filters object: vehicle and industry exhaust, dust, pollen, floating dust, virus, germ, PM2.5, H7N9 etc
Noted: Fully washable, but please don not knead it
HOW TO USE:
1.Put the dust mask between the nose and chin.
2.The back of the mask can be fixed with a Velcro.
3.Check if it is appropriate: cover your face with your hands,then breath hard and feel if there is air flow.
4.Make sure you are comfortable after wearing this mask by adjusting the back of the Velcro.