Zip fastening - please note that a detachable press stud collar is missing. Label size medium but maybe this is a US size it is a UK XL or 46" chest leaving room for layers (will fit 48" easily). Please see measurements: 27.5" Armpit to armpit, 22" shoulder to shoulder. 19-24 side to side at hem (elasticated).
Eavyweight but soft leather - some distress (most by design) all makes for an amazing patina.