Anit fog works and is secure and comfortable
I have ordered these masks three times because I keep having people I work with me ask for them.  One coworker even asked me where I got them because a friend of hers wants one after seeing the one she has.  I have a hearing disability so I got them for my coworkers.  We are teachers so they use them all day long with their students, in particular, on that also has a hearing disability.  They have a wire on both the top and the bottom so they conform and fit tightly against the face around the nose and the chin but they are still comfortable to wear all day.  They are double layered on the fabric and the anti fog has lasted for days with very little problems.  The windows are large enough that I can still see people's mouths when I am standing off to the side a little bit and I have been very impressed with how clear they are and how easy it makes it to read lips.  I have seen many masks with windows in them that the fabric blocks the mouth because the windows are so small or they don't fit properly and fall down. These do not have any problems with any of that.
Rating: 5 stars