"None of these so-called miracle fabrics breathe to the point that you can discern any difference between them when hiking."
"EVent works so well that pit zips are not required…. I see these types of comments coming from someone who has never used eVent. Try it – you may just be amazed."
Actually, I have an eVent jacket and that is precicely why I made the comment!
Granted, many factors determine one's overall experiences such as outside humidity (I hike in humid Eastern US) and one's own propensity to sweat (I would win top prize 9 out of 10 times in a sweat contest).
So for me, I have found that pit zips, etc., are much more important than fabric material.

