MULTI LAYER PROTECTION: Each PM2.5 replacement paper features 5-layers, which gives you better protection and brings you a safer breathing experience.
The first layer: non-woven fabric layer, can filter micron-level dust;
The second layer: PP layer, protects against pollutants, car exhaust, smoke and pollen
The third layer: activated carbon layer, filters harmful substances.
The fourth layer: high efficient filter cloth
The fifth layer: non-woven fabric layer
EFFECTIVE PROTECTION: These PM2.5 filter keeps you healthy and safe when at work, effectively protects your mouth and face from dust, fog, haze, allergies, smoke, ash, pollution, pollen, etc.
EASE OF USE: These filter papers are compatible with all our face masks. Simply insert them along the inside of face mask for easy use.
SAFE MATERIAL: PM2.5 filter masks are made of non-woven fabric, polypropylene and activated carbon material, no chemical odour, gentle to the skin, safe to use.
SPECIFICS: Comes in 10PCS replacement filter papers. We recommended to replace it every few days.