Not for strenuous work, not for OSHA filtering, but good for airlines
I needed a comfortable cloth mask for airline flying, to filter out the germs and perfumes that permeate the whole plane.  This mask is thick cotton cloth, so it is probably only suitable for this type of activity.  I would NOT use it for chopping wood, or painting, or anything that could be considered strenuous or need OSHA-rated protection.  Walking outdoors on a smoggy day might also be a good use for it, but not power walking because it gets warm under the mask, plus it doesn't let a lot of air through the mask.  The fit is very good for my face because I have a very round face, shorter in height and wider in width than average.  I don't think it would fit a man's face as well because the mask might be too short in height.  The bands are relatively comfortable, and so far, on the 2 European flights and 2 US flights I have taken, I have not gotten sick.  I usually get sick from an airline flight, so for me this is working for its intended purpose.
Rating: 4 stars