Here is an amazing vintage sweater by Jantzen. Feels like it could be a wool blend, but probably mostly man made fibers. Super cool skier design goes the whole way around, with dark green and maroon throughout. Exceptionally warm, soft, and comfy. It's in amazing condition with tons of life left. The tag says Medium, but here are the measurements. (refer to the last pic above to see how I measure shirts.

Chest (armpit to armpit) 20"
Shoulder to end of sleeve (including cuff) 26"
Length 27"

This item is sold from a vintage boutique in Roanoke, VA.