Anti-Pollution masks by CRUSADERS help you protect against particulate and gaseous pollution, such as Dust granules, PM10, PM2.5, Pollen, Smoke, Pathogens such as viruses and bacteria, Foul Smells, Benzene and formaldehyde because of its N99 + Carbon Filtration system which uses a total of 4 different layers. Comes in 2 Variants, MARATHON (washable, Unique Zipper Lock to hold replaceable filter) & DART (For the 1st time a Disposable Mask with N99 + Carbon 4 Layer Filter).
CRUSADERS also has different mask options, but skip the cheapest one as it is a disposable mask. The washable model is the real deal, as it has a N99 filter, 4 layers of carbon filters and 0.5 replacement filters. It offers great protection from air pollution and has a valve design.