I love the look of this jacket (size medium). I get compliments on it all the time. I knew I would have a snug fit being that it is the fitted version. I'm 5'5" 148 lbs. 42" chest with an athletic/muscular build. The chest fits great and fitted, the sleeves are a good length for me but my upper arms are tight, no fault of the jacket. The shoulders are a bit tight as well, again no fault of the jacket. I wear it daily so the issues are small. You get used to the zipper being on the opposite side. The material works great for windstopping but is not waterproof or resistant. I wear a (thick)base layer with this jacket and am comfortable down to the upper twenties. If I wear a t-shirt with the jacket it is comfortable down to the forties. If wearing in colder weather I suggest a neck gaiter or scarf. Incidentally, I wear this riding on an electric skateboard doing about 18mph average for about 4 miles non-stop so if I was just walking around town, I'm sure I'd be comfortable in even lower temperatures with the right added gear. I'm very happy with the purchase and it arrived surprisingly fast.