Vintage Long Sleeve Patagonia Capilene Base Layer Shirt
Here is a great vintage shirt by Patagonia. Feels like a blend of fabrics, made in the USA. Bold red shirt with four button collar and purple accent. Light weight, thin, and sheer. But warm, super soft and comfy. The tag says Large, but here are the measurements taken laying flat (please refer to the last pic to see how I measure shirts)
Chest (armpit to armpit) 19"
Shoulder to end of sleeve (including cuff) 26"