Most comfortable respiratory I have ever used
Most comfortable respiratory I have ever used.  I ordered medium, with my face about average size.  I wonder if large would not have been preferable, since it does not come up on my nose quite as far as I would like, but enough to contain my breathing.  Since I wear glasses though, it is better to be slightly smaller than I prefer to being so large that my glasses get pushed up.  Breathing is very smooth, with the basic dust filtration being excellent.
Rating: 4 stars