Wear a long sleeve shirt and light blue ripped jeans for a fashionable and easy-going look. Complement your ensemble with a pair of white and brown high top sneakers et voila, the getup is complete. In winter, when functionality is crucial, it can be easy to surrender to a less-than-stylish getup in the name of functionality. This getup, however, is hard proof that you can actually stay snug and remain stylish in winter. As you can see here, as a 20-year-old gentleman, you have a vast array of style options.