yeah i've been experimenting, i have a big 3m storm trooper looking mask, it worked great but too big to pack, haven't tried the small mask but wrapping my fleece hood over my face worked fine
one night was so cold and i had nothing over my mouth my punching bag (uvula) swole up like a grape it was annoying
i think i'll stick with the fleece hood less it becomes a problem again
i read some reviews, the psolar blocks your nose, looks like it warms the air to 75 degrees though so your core temp would stay high in extremes, and cabellas has some hunting exchangers with larger filters that save the humidity from your breath
I was watching the everest show on discovery, they have masks with a bag hanging from them, wonder if you can get just the mask fairly cheap, haven't found one anywhere yet
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