This jacket is plain old awesome. It's way more comfortable and breathable than my old Sweet Protection hardshell (and half the weight), while being truly waterproof unlike my Patagonia softshell. A jacket quiver of one! I usually run pretty warm, but with the pit zips fully open I'm able to tour up in my Capow jacket in most winter conditions without overheating. It's really impressive how breathable these guys managed to make a true shell!
Extra points for the easy to adjust hood (which fits nicely over or under my helmet) and internal skin pockets.
I'm 5'11" and 175lbs, and the size M fits me perfectly.