Vintage Red and Blue Jersey by Sand-Knit
Here is an awesome vintage jersey by Sand-Knit (a division of Mac Gregor). 50/50 poly and cotton blend, and made in the USA. The blue body section is a true jersey, with the little holes. This section feels like cotton. The red sleeves are solid fabric and feel like polyester. Vee neck and white striped accents at the collar and sleeves. It's light weight, soft, and comfy. It's in excellent condition with years of life left. The tag says Extra Large, but here are the measurements taken laying flat. (refer to the last pic above to see how I measure shirts)
Chest (armpit to armpit) 22"
Shoulder to end of sleeve (including cuff) 11"