5-layer filtration protection made of activated carbon, non-woven and melt-blown filter cloth for cloth face masks.
Keeps away a range of airborne contaminants and hazards including dust, seasonal allergies, smoke, pollution, ash, gardening pollen, micron-level dust and other.
Easy to use, place PM2.5 filter in the filter pocket opening of a mask. Recommend replacing filter once a week for the best effect.
Usage: For general use only, not approved for medical use
