A charcoal crew-neck sweater and a crew-neck t-shirt are a great combo to have in your daily wardrobe. Don't know how to complement your look? Wear black suede desert boots to boost the fashion factor. As you can see, this outfit is seriously stylish and will provide the necessary warmth for getting through the winter season with ease. This combination shows that as a guy in his 20s, you have a wide array of dressing options.