Appears to be 100% Polyester
Size tag on item: 40
Measured lying flat:
* shoulder to shoulder: 17. 5”
* armpit to armpit: 22. 5”
* Length: 27. 5” (measured from collar in the back, to bottom front hem)
* Sleeve: 18” (measured from armpit to end of sleeve)
This item is sold from an excellent, highly rated vintage seller in Quincy, IL.