Filters PM 2.5 - Fits Most Face Covers with Filter Pockets
PM 2.5 Activated Carbon Filter 5 Layer Anti Dust Protection Filter, recommended for up to 7 days use for each filter
Packs of 10, 20 or 50 filters
Filters size: 12.5 x 8 cm/ 4.9 x 3.1 inches.
The Filters made of activated carbon and non-woven melt-blown filter cloth, five-layer filter system to offer you secure protection and ensure your health, against PM2.5, dust, fog, haze, pollen, smoke, industrial emission, pollution, vehicle exhaust, etc.