One of the best ways for a man to style out a white crew-neck t-shirt is to combine it with olive camouflage cargo pants in a laid-back look. Break up this ensemble with a more polished kind of shoes, like this pair of white canvas low top sneakers. We love how ideal this look is come super hot sunny days. Guys wondering how to sport modern casual outfits as you make it through your 20s, you have your answer.