The American Flag Mask is made of Lycra Spandex.
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.