This classic and casual pairing of a white crew-neck t-shirt and grey dress pants is very easy to pull together without a second thought, helping you look awesome and ready for anything without spending a ton of time going through your wardrobe. Flaunt your laid-back side by finishing with a pair of white leather low top sneakers. This outfit isn't a hard one to score and it's summer-appropriate, which is important when it's boiling hot outside. Guys who wonder how to pull off smart casual style as you cruise through your 20s, you have your answer.