A harrington jacket and black chinos are veritable menswear must-haves if you're piecing together an off-duty closet that holds to the highest sartorial standards. Up the style factor of your ensemble by slipping into a pair of black casual boots. As days are getting cooler, you'll discover that an ensemble like this is ideal for this time. So if you're searching for a good-looking yet mature combination for a gent in his 20s, this is it.