I initially bought this as a gift... but I had to order another because I decided to keep the gift for myself.
I already own the shirt-jac without the fleece lining, but I enjoy it so much that I like having a size up of the fleece lined version for deep winter weather.
I can't speak highly enough of these shirt-jacs. The Cordura material will stand up to almost any abuse one can imagine. It cuts all wind and kept me dry for over an hour in steady rain. It's significantly tougher than the stuff you can find from Duluth or Carhartt.
The collar is excellent, the pockets are huge, the buttons are heavy duty. The cuffs accommodate any kind of winter glove well. The fleece lining is soft and comfortable.
I'm 6'0 180 and the large size is perfect for layering underneath: fleeces, hoodies, down mid-layers, etc.
With a down mid-layer it kept me warm at 20 degrees Fahrenheit with 20-30 mph winds... standing still. If I were working in it I would have overheated.
I'm a huge gear head and have closets full of mountaineering, skiing, and work gear. This is hands down the most badass and durable shell I've ever seen.
And, of course, I love that the materials and craftsmanship are all American.