They are what they are what I thought they were good
These filters can fit into any mask that has slits and provide added protection. If the mask doesn't have slits, I simply put one of them behind the mask. Glad I got them.
These masks are a good value for the price and a reputable American company
Satisfied with order.
I was so happy to find these filters....they are neatly packaged and I can even share them with friends and family!