Here is a sweet long sleeve sweater by Le Tigre. Feels like acrylic or a blend, and made in the USA. Geometric designs of bluish gray and off white on a purple background. Lighter weight, but plenty warm. Super comfy and in excellent shape. The tag says Large, but here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 23"

Shoulder to end of sleeve (including cuff) 26"

Length 27"

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