For an outfit that's very simple but can be dressed up or down in a variety of different ways, pair a crew-neck t-shirt with black dress pants. You can get a bit experimental with shoes and class up this look by rounding off with a pair of brogues. In the winter months, when warmth is key, it can be easy to settle for a less-than-stylish look. This look, however, is a practical illustration that you can actually stay comfy and remain equally stylish in the winter months. As a gentleman in his 30s, you probably want to start dressing like a grown man. That's when inspo like this comes in handy.