The worker jacket’s construction is usually of cotton or canvas. The older, true vintage ones, which are usually more expensive, are made out of moleskin. No, not actual moley moles, nor those expensive notebooks, but a type of thick, heavy cotton. Somewhere between velour and chamois, it has a soft, almost fuzzy feel. At the time it was affordable, washable and took a battering — to a point. Home repairs and patches are almost always found on vintage pieces, giving them a unique edge and making them much more desirable.