This relaxed pairing of a dark green sweatshirt and charcoal jeans comes in handy when you need to look cool in a flash. Let your outfit coordination expertise truly shine by finishing this ensemble with black and white canvas low top sneakers. As the weather begins to warm up again, it's time to shed those bulky winter layers and choose something lighter, like this getup here. If you're often not sure how to dress as a 20-year-old man, this ensemble is a perfect example.