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This comfortable and durable face mask is a comfortable mix of thick polyester and soft cotton layers, and comes with 2 replaceable PM2.5 filters.
These special filters are made from activated carbon and non-woven melt-blown filter cloth, a 5 layer filter system that effectively keeps away from PM2.5 and a range of airborne contaminants including droplets, dust and pollution.
(PM2.5 refers to atmospheric particulate matter (PM) that have a diameter of less than 2.5 micrometers, which is about 3% the diameter of a human hair.)
The PM2.5 filters last for 48-72 hours depending on usage and the environment they are used in. It's recommended approximately 2-3 days for frequent use and 5-7 days for occasional use. You can buy replacement packs of filters so you can just keep changing them as you want.
We recommend the main polyester mask is washed with soap and warm water regularly to keep it clean.