Thanks for the reply. How many years did it take to deform that badly? Were you the only owner? I've never seen another collar (and surrounding area) appear to have deformed so badly.It's too small. The neck hole was in the 15" range if I remember correctly, but I wear dress shirts with 16" collar. This is what I mean when I say sizing down in Aero would not help because neck hole becomes too small. And because of that, the / \ crease happens. Even in zipped up mode, you can see the slight / \ creases. This is not an Aero pattern issue, but a sizing issue. In my experience, I wore the wrong size. If I bought a size or two up , I would not have the /\ creases but I also might not like how it fits in the body. This is why I say Aero has smaller neck holes for their tag size, especially compared to other makers.