Pair a shirt jacket with a crew-neck sweater for a smart look. Go the extra mile and jazz up your outfit by rounding off with black leather loafers. Keep this look in your front hall closet come spring, and we promise you'll save a ton of time getting dressed on more than one morning. As a 30-year-old guy, you want to start dressing more maturely. That's when inspiration like this comes in very handy.