Ambient 100 Hooded Jacket

The Ambient 100 feels like a niche top but after actually receiving it, putting it on, etc. I could see wearing it all. the. time. It is warm, super-light, and trim but not tight. I ordered a Large and it should be perfect inside waders, under a vest or heavier outer shell, and even alone during turkey season or cold mornings fishing, which is exactly what I was hoping for. I can draw a bow and mount a gun without it feeling tight. For reference, I have a 45" chest and 38" waist (32. 5" sleeve in dress shirts), putting me right in between sizes on the size chart (5'9. 5", 210lbs). Before it arrived, I was worried I should've ordered an XL but for what I am looking for - a high performance, non-bulky mid layer that can be a light outer layer in shoulder season conditions and go on every trip with me, I'll stick with the Large. I wouldn't wear a button-down shirt or anything underneath that would bunch up, but with a shear-fitting long sleeve base layer like a Core 1/2 zip, as I'm planning, it should be great. If I have an initial complaint, the hood stands a little tall but snugs down if I pull it down a bit in the back. Is it dead quiet? No, but it is pretty darn quiet and sufficient for my intended uses.