Wear a burgundy vertical striped dress shirt and blue jeans for a smart look. A great pair of brown leather derby shoes is an easy way to power up your ensemble. In winter, when practicality is critical, it can be easy to settle for a less-than-stylish ensemble in the name of functionality. This ensemble, however, is hard proof that you can actually stay snug and remain stylish during winter. If you've reached your 30s, pay attention to getups like this to add more maturity to your personal style.