? This adult is specially designed for face, suitable for adult,Children use and provides better protection. ? This dust respirator can be used to protect you from harmful dust particles, PM2.5, vehicle exhaust, woodwork, pollen allergies, and fumes. Ideal for people at risk of respiratory diseases, living in or travelling to areas with high air pollution / smoke levels. Second layer filters industrial pollutants, automobile exhaust, second-hand smoke, and pollen allergens ? anti-dust protection mouth for sporting, running, hiking, climbing and many more purpose, which has double . ? Adjustable Straps: S are designed with elastic band, and could be used by any one.