This laid-back combination of a white and navy vertical striped short sleeve shirt and a white crew-neck t-shirt is super easy to put together in no time, helping you look stylish and ready for anything without spending a ton of time rummaging through your wardrobe. If you want to easily polish off this outfit with one single item, why not complete your look with a pair of dark brown leather chelsea boots? So as you can see here, it's a neat, not to mention spring-friendly, look to have in your transeasonal wardrobe. Guys wondering how to rock modern casual outfits as you move through your teenage years, you have your answer.