Pairing an orange crew-neck t-shirt and sports shorts will allow you to assert your expertise in men's fashion even on weekend days. Throw grey athletic shoes in the mix and the whole outfit will come together wonderfully. As the weather starts to get warmer, it's time to get rid of those bulky winter clothes and choose something lighter, like this look here. Men who wonder how to wear cool casual looks in your early 20s, you have your answer.