Go for a black crew-neck t-shirt and charcoal dress pants for a clean-cut sophisticated ensemble. A pair of beige canvas low top sneakers introduces just the right amount of visual interest to this look. This look is a pretty great option, especially for fall, when the temperatures are dropping. As you're getting to your 30s, you want to start dressing more like a mature gentleman. In this case, looks like this are a goofproof option.