I seem to be wearing this all the time ... in town, in the mountains or grabbing coffee. This Radiant hoody seems to regulate my body temps with some type of weird voodoo magic. I usually prefer down/synthetic insulation over fleece because of the warmth/weight ratio. But this jacket is amazingly comfortable and the fit moves with you without getting in the way. Recently, I was working in the snow where other folks were putting on their puffies to stay warm. Instead, I just put up the hood and stuck my hands thru the thumb loops and it kept my body heat from escaping - wallah, didn't need my down jacket. Because it's thin, there's less bulk underneath my gortex jacket so I get better freedom of movement. Nicely done OR!
... this is the one piece I'd always bring. For doing anything active, climbing, ski touring, mountain biking, Outdoor Research designed this piece for active folk. I used to wear a light weight wind shell that breathed like a garbage bag. Even though this piece is slightly heavier, the Ferrosi keeps the wind out, the rain/snow/sleet off and breathes like nobody's business. When your partners stop to strip off layers, you're still moving nice and easy. Get to the top and a little weather coming in? Just pop the hoody. I'd recommend the hooded version for that reason, my non-hooded stays in the closet. And the Spring '12 diablo color is easy on the eyes and easy to spot.