(5'7", 140 lbs, small/medium build, Size S jacket/fleece)
I got my Stoic shell and the next day it started raining, perfect timing. It was fun to watch light rain literally bounce off the shell fabric, I didn't even feel damp after an hour of light drizzle. I got to test the flexability of the jacket and the material on a gnarly cliff approach and a morning of climbing in drizzly conditions, everything worked well and even though I got the slim-fitting small, there was the prefect amount of stretch and fabric to go for the big reach moves without the jacket riding over my waist. The afternoon of the climb turned into flash flood conditions: 40 miles per hour winds, rain going sideways, hydroplaning vans, useless windshield wipers. I ducked out of the car with the Stoic already on and watched as everyone else ran for cover. I strolled across campus totally dry while everyone else hid indoors. Twenty minutes later my core was still dry with a little bit of soak through around the cuffs and the hood brim where there is some elastic fabric. The pockets and vents are well placed and the zippers slide like magic. Layered over a backcountry midlayer it is snug and going up a size may be a good idea, but not necessary if you are okay with a close fit. This shell is going to replace my ski shell and even without the powder belt it should work great.

After a complete New England winter of use this jacket is still my favorite go-to jacket for just about everything except heavy rain. It held up well over a ski season as a mid layer and without a shell and I have yet to wash it because of either grime or stink. The jacket feels like it has a lost a little bit of its bulk but it is still as warm as the day I bought it. Yesterday I 'discovered' the stow pocket for the first time and it packs up to the size of a softball: awesome.

I am at school in Vermont and I live in this jacket from november to march. I owned and lost a nuptse and while the nupste was awesome because I could wear it over anything from a T-shirt up and run to class in any weather, I hated the bulk and didn't like to do anything active in it. I am 5'7, 135 lbs and the small fit great: slim and athletic. After getting this jacket, I am done with down, the Primaloft 1 is awesome.

I wear the jacket everyday, usually with a sweater underneath and it is ample down to about 18 degrees. I have worn the jacket with a set of Underarmor and a sweater and am fine down to -12. Light and totally windproof, the jacket is any skier/hiker/climber's gift from heaven. I ski in it in Utah in the mid-30s without a shell and it is great. Even in heavy snow and light rain, I am warm and dry.

Get one. Also, don't be afraid of the blue/lime color, I get positive comments on it everyday.