Originally Posted by tj_ras
2l and 3l explained
Incase you would like to read more.....if you dont want to read the whole article, its on page five, just scroll to 2lvs3l.
Whole article talks about different systems along with pros and cons, ie: goretex,eVent, pu, etc. etc.
I felt it was a good read.
Little excerpt from the article, to possible spark your interest.
Wow! Great info in that link. I just did 18 hours of CE for my RE license so I'm not in the reading mood, but I bookmarked that for a later date. Thx!