Review (4/5): I can breath again in comfort all day
Nice to be able to breath, the insert does not fit everyone I had to roll the plastic back a little on the chin and found it more comfortable. I have a big face I guess. Also with the plastic against the face I did sweat a bit, after I glued fabric to the inside I found more comfort. To take it one step further I attached this to my mask with glue. much better after the modifications . I can wear this mask all day with comfort now. Rated for the modifications and comfort after the modifications.
I would buy again.