A PM2.5 filter is a mask insert that can be fitted into the pocket of a cloth mask to increase its level of protection. It gets its name from an established standard based on 2.5 micrometres (microns) which is a reference to the size of the airborne particulate matter that this filter is targeted for.
It is made up of FIVE filtration layers, including nonwoven polypropylene, meltblown fabric and a middle layer of activated carbon that work together to achieve superior filtration performance.
Current size available: 14x8cm (approximately 5.5x3")
Five layers of filtration, multiple protection to isolate dust, good ventilation, and double protection through additional filters
Activated carbon filter protects against airborne particulate dust, smoke, pollution, ashes, etc.
Safety protection: ideally protects your mouth and face from outside dust particles and water droplets that can be transmitted aerially
Should be discarded after each use, depending on level of exposure.