To put together a relaxed casual outfit with an edgy twist, consider wearing a white and green horizontal striped crew-neck t-shirt and blue jeans. Let your outfit coordination credentials really shine by rounding off your outfit with a pair of white leather low top sneakers. This ensemble isn't a hard one to score and it's season-appropriate, which is more important when it's blazing hot outside. This combo illustrates that as a younger gent, you have a vast array of dressing options.