5 pack of activated 5-layer carbon filters for use with all masks sold on HandmadeFaceMasks.org.
Ideal for all outdoor and indoor sports, such as running, jogging, cycling, motorcycling, riding, hiking, skiing, snowboarding, paintball, lawn mowing, on public transport and other activities.
Added protection from pollution, ash, pollen, and viruses.
**Filters do not filter out viruses 100%. They simply add another layer of protection between contamination and the mouth and nose.