For a laid-back and cool ensemble, team a black print varsity jacket with black chinos — these items go perfectly well together. Our favorite of a countless number of ways to complement this ensemble is a pair of white leather low top sneakers. So so as you can see, it's a killer, not to mention spring-ready, outfit to have in your seasonal closet. Men who are curious how to wear cool casual outfits as you turn 30, you have your answer.