Owned for one season so far - great fit, I'm 185 6' and large is perfect. Used for running in cold weather (below or close freezing) and mountain biking. Holds off rain / snow for short showers. Also used for ski touring while skinning - worked great. I have the Epsilon AR as well. For comparison this is a thinner material which has taken some serious abuse with scrapes passing trees mountain biking and still looks new but might not be as burly as the Epsilon - it also feels like a closer weave and so keeps a little more wind out than the Epsilon but still really breathable - (bonus is it doesn't stink either after months of use). Very happy with it. About to buy a 2nd one.