Made of activated carbon and non-woven meltblown filter cloth, this filter system effectively keep away from PM 2.5 and a range of airborne contaminants.4 Layers design:
1st layer of spunbond cloth filters micron-level dust.
2nd layer filters industrial pollutants, automobile exhaust, and pollen allergens.
3rd layer of active carbon cloth filters micron-level dust.
4th layer offers filter density for smaller material. 5th layer of spunbond cloth filters out all kinds of harmful substances.
Filter size - approx. 12x8 cm/ 4.7" x 3.15", compatible with Qstomize custom face masks, easy to insert or replace.
Multiple protection layers to isolate dust, good ventilation, double your protection against nasty substances, gases and odors with an additional filter inserted into the inside of your pollution cover.
This filter anti airborne particles dust, seasonal allergies, pollution, ash, gardening pollen and so on. Ideal for all outdoor and indoor sports, such as running, jogging, biking, cycling, motorcycling, riding, hiking, skiing, snowboarding, paintball, lawn mowing, on public transport and other activities.