If you're hunting for a bold casual but also dapper look, dress in a white crew-neck t-shirt and navy sweatpants. A pair of blue athletic shoes will never date. In the winter months, when warmth is a must, it can be easy to settle for a less-than-stylish getup in the name of functionality. But this getup is a shining example that you can actually stay warm and remain stylish at the same time during the winter months. And if we're talking style for teenage guys, this getup is ideal.