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.
There are a few reasons why 3L construction has gained a lot of momentum in the industry lately. First is performance: the addition of the bonded tricot liner increases the breathability of the garment.