Pair a white horizontal striped crew-neck t-shirt with a navy suit and you'll achieve a sleek and polished look. A pair of white canvas low top sneakers introduces just the right amount of casualness to this outfit. This ensemble is a goofproof option if you're on a mission for a great, summer-ready ensemble. Guys wondering how to rock smart dressing as you make your way through your 20s, you have your answer.