Combining a black and white waistcoat with chinos is an awesome choice for a smart and elegant look. A pair of white and black leather low top sneakers instantly dials up the wow factor of your look. As you can see, it's extremely easy to look seriously stylish and stay toasty when cooler days are here, all thanks to ensembles like this. Men wondering how to sport semi-casual dressing as you work your way through your 20s, you have your answer.