For a cool and casual outfit, team a white turtleneck with chinos — these items go pretty good together. Bump up the formality of your outfit a bit by rocking black suede casual boots. You see that just because the mercury dropped below zero doesn't mean you can't still look good. As you're moving from your 20s to your 30s, you want to start dressing like a grown man. If that's the case, combinations like this are ideal as inspiration.