Most helpful critical review
58 of 64 people found the following review helpful
3M 6291 Respirator
on November 14, 2011
I am 6'3" 220 lbs, have an average size head but have a broad nose bridge. I bought this respirator in a medium size and found that it was too small and uncomfortable after wearing it for an hour or more. I ended up buying the 3M 7500 respirator in large and it fits great and is made of a more comfortable material. The 7500 also forces exhaust downwards and away from your glasses or faceshield to prevent fogging.
Get the 7500 and go large if you have any doubts of the size.