I used one of these for four years - got a free replacement when they were recalled - and never had a problem with them. Other umpires would marvel at how light they were. I went to a single bar two years ago and like it, as well.
A buddy wearing one of these +POS masks got drilled two years in a row and got a broken nose EACH TIME. +POS paid the doctor bills (I was surprised). I called my buddy Pinnochio for a year after that
JJ