Flaunt your chops in men's fashion in this casual combination of a blue chambray short sleeve shirt and beige chinos. Our favorite of a variety of ways to round off this look is with a pair of white canvas low top sneakers. This is a surefire option for a cool winter-to-spring outfit. As a 30-year-old guy, you want to start dressing maturely. In this case, looks like this are ideal as inspiration.