warm and packs down
I work in production in NYC and have to work outdoors at all hours and in all types of weather. I wear this as insulation under my TNF Android softshell. as soon as I added it and went outside with both, I could tell I was warming up without getting damp. The combo is good down to the mid 30s, although I'd probably add a fleece if it was colder and I planned on working outdoors for an extended time. I haven't used it as an outer layer while working due to a fear of it tearing, but it would probably be fine around town. It packs down really well so I can stash it in my backpack full of other gear. Another plus is that it is a pretty close color match to the Android (and other TNF gear in this grey/blue combo), so they both make sort of defacto "tri-climate" without all of the bulk. Finally, it just looks cool.