I love my MSA airline respirator...
No cartridges to mess with, no worries of break thru, just put it on and go... hell the damn thing doesn't even fog. Its actually fairly
comfortable... I have worn it up to an hour or so at a time.
Just put it on your face, pull the two straps in the back till you get a good tight seal and plug it in to your airline and your all set.
Since its an on demand rather than constant pressure it does take a bit of getting used to as it takes a bit more effort to inhale and exhale.
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