Excellent jacket!
"Love this jacket. Was a bit thrown off initially due to the sizing. I bought a medium instead of a large as I’ve tried on a Mammut Alto Guide jacket in large and it just felt too big. By the sizing guide, I'm a large. It is a bit snug around the waist but fits so well everywhere else. I can easily have my base layer and Mammut Tais fleece underneath with a bit of room to spare. It's pretty lightweight, packs down and seems to be pretty rugged. I was able to shrug off an absolute downpour in the Alps, no worries. I have full faith in it to continue brushing off even the foulest of weather. It is an expensive jacket, but it seems to be completely worth it in my opinion."