This is a classic Armani piece.  Harkens back to the Italian country side, which was his original look and inspiration for the fashion lines.  Probably from the early to mid 80's.

No fabric tag but feels viscose. Very good vintage condition with some sign of wear. There are a few subtle flaws in fabric in a few places (see last pics) but no major issues to call out.

Size 15.75/40, oversized fit: 23” armpit to armpit, 37” length, 41” sleeve.