Why not go for a denim jacket and blue ripped jeans? As well as very practical, these pieces look amazing when paired together. If you want to instantly kick up your ensemble with one single piece, complete your outfit with brown chelsea boots. During winter, when warmth is imperative, it can be easy to settle for a less-than-stylish look. This look, however, is a shining example that you can actually stay warm and remain equally stylish in winter. If you're not sure how to dress as a 20-year-old man, this outfit is a practical illustration.