A white and black crew-neck t-shirt and navy skinny jeans are among the fundamental elements in any man's functional casual sartorial collection. Ramp up your outfit by rounding off with a pair of low top sneakers. This ensemble is a good option if you're piecing together a well-coordinated look for transitional weather. So if you need style tips on what to wear as you progress through your teens, this ensemble is definitely worth saving for later.