First my measurements... 42R jacket, 16" x 33-34" shirt, and 33-34" waist size. Purchased a medium and it has an athletic-to-trim fit with a little extra room in the midsection. It's an overall nice top and is a bit on the heavier side like most wool garments. However, I imagine it will be warm, not retain odor (wool contribution), and breathable for active pursuits but those seeking something warmer for low activity or idle time, unless used as a midlayer, should look elsewhere. I like it but there are a few shortcomings in my opinion. On the first day of wearing it after shaving my face, I noticed some pilling around the interior collar at the border where it meets the exterior. So I suspect it will end up looking somewhat frayed or unattractive after wearing it multiple times and an extended duration. I don't think it matters if the top is fully or partially zipped as there will most likely be exposed sections either way. They can be shaved but that will weaken the fabric integrity. Anyway, that could have been solved with a fleece collar liner. Second, I love the contrast color of the flatlock seams but don't like the two separate shoulder seams (aesthetically). So I am kind of on the fence with this sweater. In conclusion, it is borderline too expensive considering potential longevity issues.
This review was written in the old system and had content requirements that are different than reviews written today.