This dust mask is suitable for all kinds of outdoor activities. Such as: Mountain-biking,Running,Horse riding,Snowboarding,Moto-X,Skiing,Speed walking,Climbing,Cycling,Walking,Motorcycling, etc. Also applies to: Exhaust, Viral influenza, Industrial emissions, Dust allergies, PM2.5. For maximized performance, the mask must be sealed properly around the nose and mouth, so that all inhaled air can pass through the filter.
Breathing filter valve device: Yes
Functions: anti fog, haze, anti pollen, anti dust,anti Automobile Exhaust Pollution,anti PM2.5.