Vintage Long Sleeve Sweatshirt by Topicknits

Here is a super cool vintage long sleeve shirt from the 80s by Topicknits. 50/50 blend of cotton and polyester, and made in the USA. Blue shirt with yellow and green accents. Super cool buttoned flap detail at the chest. It's medium weight, super soft and comfy, and it's in excellent condition with years 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) 18"
Shoulder to end of sleeve (including cuff) 20"
Length 20"