To repeat what has been said 100 times: it's boxy. I am 5'7" and 125 lbs, and a S fits well in every way except that the sleeves are a bit short. Not good while bike-riding (sleeve ride-up). It's definitely not cut for slim figures -- to get it to fit my torso I have to deal with short sleeves.
Also, I don't know why it's called wind-resistant -- not at ALL! I am tempted to return it and get a WindWall or something by Patagonia or Marmot (better fits) because, literally, the wind goes right through my Denali while biking or being in the wind. I wonder if it's the recycled fleece? I hope not.
So, the Denali is certainly cute and warm but not suitable for wind or those with slim/narrow figures or long arms.