I absolutely love this jacket!  I live in San Francisco, and I wear this jacket everyday on long walks through chilly, windy, foggy Pacific Heights.  It keeps the weather out and the warmth in.  The fabric really "breathes" also, so I'm not too sweaty after exercising.  Just a perfect jacket for our moderate Pacific Coast climate.  I plan on buying another Helly Hansen Midlayer Jacket with a hood for rainy days, and sailing out on the bay.  I generally wear a Men's size small to medium, so I selected a size medium and it fits perfectly.  This brand features a more fitted cut (which I actually prefer).  The jacket is nicely tailored near the shoulders, but here's plenty of torso room, without feeling too tight or restricted at my mid-section.  For sizing reference, I'm 5'10", 155 lbs, 31" waist with an athletic build.