John K Jordan
Tony, I've tried a bunch of different masks/respirators and I hated wearing many of them. This one is the most comfortable and has excellent ratings. I have no problem wearing it for hours. I use it with 3M P100 filters for dust. It fits well under a face shield.
I prefer a respirator to even the Trend powered face shield I have - I think the respirator has better filtering. (and it's a LOT cheaper!)