Great product
I can breathe with this mask and it seems to be accepted by all indoor locations.  I do air it out for a little bit before using the first time, they do break easy if not cared for but at $1 each, I just hang it from my dashboard.  There is a clear film to be removed. People can see your smile.  I am very grateful for the product.  Some come with a white chin band, I prefer the clear support plastic chin band.
Rating: 5 stars