Lightweight Fleece that thinks it is a Midweight
I usually where this as a midlayer. Honestly, when i first got it, I felt a bit ripped-off because it was light and thin. To my surprise, it is much, much warmer than it looks. I guess that is a thumbs-up to Polartec for the great fabric, and a high-five to Arc'teryx for making a midlayer that is technical for outside adventures, yet stylish enough for casual Fridays at work.