Marrying a navy double breasted blazer and a navy sweater vest is a surefire way to infuse your current styling routine with some rugged refinement. To give your overall look a more laid-back twist, why not complete this outfit with a pair of black leather loafers? On not-so-bone-chilling days, wear this summer-to-autumn look and look absolutely amazing. A no-brainer getup proper for mature men.