Product: AIRNEX 10pcs PM 2.5 Activated Charcoal Filter Mask Inserts - 5 Layers Protection PM2.5 Mask Filter Insert - PM 2.5 Filter Mask Replacement - Filtros para Mascarillas
Brand: AIRNEX
✅ DURATION OF FILTERS
 Duration time of filters depends on the pollution level and the frequency of usage. 
 Generally speaking, to protect yourself from pollution or any airborne contaminant, we recommend to replace your filter every 2-3 days (if you are using it for several hours a day) or 18-24 hours of total use.
 If you use it in a particularly dusty environment (eg. doing woodworking, gardening, etc) would be better to replace your mask with a new filter after you finish that activity.

✔ Ships from the USA: Fast and Free Shipping for PRIME members. Get your PM 2.5 protective filters for your cloth mask in few days after placing the order
✔ 10x pack of Activated Charcoal filters for face masks. These filters are a perfect replacement for Airnex masks or other reusable masks for adults
✔ Easy inserts for your face mask, simply place it inside your cotton mask pocket and enjoy high protection from air pollution, haze and other airborne contaminants, tested by 3rd-party labs.
✔ Filters are not washable and should be replaced after 18-24 hours of total usage for best filtration efficiency. Read more below about our Activated Carbon technology.
✔ Enjoy Airnex Guarantee: they fit your mask or we'll issue 100% refund. The dimensions of the filters are: 4.9'x3.1' and have been tested to fit majority of the masks in the market

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