This casual combination of a teal shirt jacket and a long sleeve t-shirt is extremely easy to pull together without a second thought, helping you look on-trend and prepared for anything without spending too much time combing through your wardrobe. For a more sophisticated vibe, why not complete your outfit with black leather derby shoes? Seeing as it's blazing hot outside, this getup is perfect and entirely summer-appropriate. Those wondering how to sport smart outfits as a teenage boy, this outfit should answer your question.