A navy long sleeve shirt and navy jeans are the kind of a fail-safe casual combo that you so terribly need when you have no time. Send an otherwise classic look down a more informal path by finishing with a pair of athletic shoes. It's is a viable option if you're on the hunt for a neat summer-to-fall ensemble. Gentlemen who are curious how to pull off edgy casual outfits during your teenage years, this combo should answer your question.