An olive camouflage crew-neck t-shirt and cargo pants are the kind of a fail-safe casual combo that you need when you have no extra time to dress up. Tan casual boots are a guaranteed way to breathe an added touch of style into your outfit. Naturally, it's easier to work through a warm weather day in a fresh ensemble such as this one. Overall, a good example of laid-back style for 20-year-old men.