Not as substantial as I was expecting - ie a lighter twill that could be worn on a summer evening as opposed to a beefier fabric - but the fit is fabulous, as is the burnt orange color - thankfully not as boxy as I’d thought it might be, slim but not skinny (I’m 6’ tall, 38” chest, 32” waist, and a Small is always my Levi’s size). Delighted with the shirt, though glad I paid half the price in the sale, it would be insane otherwise. Would definitely buy in other colours in future.