A long sleeve shirt and navy vertical striped chinos teamed together are a great match. If you want to immediately amp up your outfit with a pair of shoes, why not complete your getup with navy and green loafers? So if it's a warm summertime day and you want to look sharp without exerting much effort, this look will do the job in no time. All in all, a never-failing option when it comes to fashion tips for teenage guys.