Vintage Long Sleeve Turtle Neck Sweater by Mathias

Here is a super cool vintage sweater from the 80s by Mathias. 100% acrylic and made in the USA. Gorgeous green fabric with sweet geometric patterns in the knit. It's fairly light weight and soft, warm, and comfy. It's in excellent condition with tons of life left. The tag says Medium, but here are the measurements taken laying flat. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 20"
Sleeve 20"
Length 26"