This is a filter element specially designed for our in-store masks. It consists of 5 layers, 2 layers of non-woven fabric, 2 layers of meltblown cloth, and 1 layer of activated carbon, which can make your ordinary masks more protective!
Filters are compressed fibers and would not stand up to being washed. Filters last 5-7 days of casual use or 12-15 hours of consecutive use. It is a good idea to get more than one replacement filters.
