Basically, it is designed to capture up to 95% of air borne particles, it is best suited for people working in oil plants, construction sites, laboratories, industrial applications, and workplaces.   
 
SPECIFICATION
It is designed to filter out 95% of particles in the air as small as 0.3 microns.
The activated carbon layer absorbs chemical pollution and a thick layer block small particles. 
It is tested for appropriate fit to achieve minimal leakage. 
It snugly fits around the nose and mouth, without leaving any gaps.
It is comfortable, lightweight in design that gives ease of breathing.