Jantzen Doubleknits, Larry Mahan 1971 Ad. Looks for the traveling man. With coordinated doubleknits. The man who knows where hes going, and who wants to look good when he gets there. Like rodeo champ / pilot Larry Mahan. And perhaps like you. The look? 100 percent DuPont Dacron polyester doubleknits in blazer, tailored slacks and full-fashioned print shirt. We found the traveling man arriving at sun-drenched Sunriver Resort, Oregon.