I have two of these.
I have two of these. The first I ordered in XL thinking it would be handy to throw over my jetstream jacket during low activity without having to constantly take off my jacket. Extra warmth was ok, but I apparently don’t worry about my gear much when I get into the elk. It’s pretty shredded after one season. Totally my fault. Won’t do that again. Second one ordered in large to layer under the Jetstream Jacket, as Sitka probably intended. Extra warmth is much more noticeable, but not too much to hike in if it’s cold, especially with the pit vents open. This vest feels weightless, and fits my frame perfectly in large. 5’9” 170lbs.