All of my masks are handmade here by me. They are made with care and detail which includes pressing and hand sewing, I use a cotton muslin for the lining (against the face). I wash the lining fabric on “sanitary” cycle in my machine with bleach and oxy powder. The outer shells vary but all must be washed by hand in cold water. I always use Woolite. These do not have pockets for charcoal filters.