This lightweight mask is ideal for using against nuisance and non-toxic dusts and powders. It is water resistant and does not impair breathing, voice or vision, it can even be worn comfortably by people with glasses. This mask contains a metal nose clip to contour and fit a person's face comfortably. It is also formalin and synthetic resin free, for your peace of mind. This dust mask is ideal for any disaster preparedness kit but can also be used for renovation, house or garden work.