Here is a sweet long sleeve sweater by Dunson. It's 100% acrylic. White fabric with accents in tan, olive green, and red. Medium weight, but plenty warm. Super comfy and in excellent shape. 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) 24"
Shoulder to end of sleeve (including cuff) 24"
Length 25"

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