I think a Medium ArcTeryx might be one size too big. I might go try it on at the local shop and I'll get back to you, but a Stingray was a bit too large when I tried a Medium size on.
Originally Posted by Blaise68
I have an Arc'teryx Sidewinder AR shell. Size Medium in Teak. Its been worn once in the rain. I bought it this summer for the ski season but the wife put me on a diet and it just doesn't fit anymore. $300 shipped