This off-duty combination of a turtleneck and a blue long sleeve shirt is very easy to put together without a second thought, helping you look awesome and ready for anything without spending a ton of time going through your wardrobe. Introduce a pair of white canvas slip-on sneakers to the mix and you're all done and looking amazing. Gents who wonder how to wear cool casual dressing as you progress through your teenage years, this combo should answer your question.