If you're after a casual but also dapper ensemble, opt for a shirt jacket and white chinos. And if you wish to instantly tone down your look with one single piece, why not introduce black and white slip-on sneakers to the mix? So as you can see, it's a neat, not to mention season-appropriate, outfit to have in your transeasonal closet. And if we're talking style tips for guys over 40, this outfit looks great on most guys.