A light blue vertical striped long sleeve shirt and blue jeans are a cool go-to combo to have in your menswear arsenal. For a more polished vibe, why not introduce a pair of dark brown suede chelsea boots to the equation? So so as you can see, it's a knockout, not to mention season-appropriate, combo to keep in your seasonal sartorial collection. More polished combos like this look handsome on 30-somethings.