5-layer PM2.5 activated carbon filter element and valve system built to protect your respiratory system by keeping your lungs healthy. New lab-tested filtration technology functions similar to a N95 and filters over 95% of pollution, haze, dust, pollen, pollution, gas, odor, dust, pollen, smoke, bacteria and viruses.
Includes 2 filters. Filters should be replaced every 7 days after consistent use.