My intended use for this piece is mostly casual running of errands around town here in Wisconsin. I use this in the teens (Fahrenheit) give or take 10 degrees, which I suspect is colder than most might use it, FYI. I don't layer much (over or under) with this. At 13.2 ounces, I find the Dewline packs more warmth than the smaller-baffled jackets I've tried from other brands at similar weight. The FIT is absolutely perfect: it maintains a tailored fit though the torso down to the waist but isn't restrictive in the chest/armpits. I've got a fairly athletic build w/ a 32" waist and I wear medium in pretty much everything. ME's insulated jackets in general fit me like I want them to. Other brands' insulators of similar weight & features tend to either bulge around the midsection or pinch at the armpits; this does neither. If you have found similar complaints with other brands give this a shot. Other details which distinguish this from competitors include a GREAT collar: it tapers UP as it goes toward your chin and there's plenty of down in there. Other brands seem to skimp on this & I suspect it's b/c they intend jackets of this weight to not be used in as cold of temps as I prefer it for. The jacket also features a moulded front zipper & interior zip pocket, which were absolute deal-breakers for me on this jacket. It also has dual-hem drawcords, great stretch cuffs, nice little drop hem in back. This ME Dewline soars where other jackets of similar weight, warmth & features fell short for me (and I've tried a whole bunch from the likes of Arc'Teryx, Black Diamond, RAB & Montane). The best part: this is cheaper than its competitors, too.