A charcoal gilet and brown chinos are the kind of a foolproof off-duty look that you so desperately need when you have zero time. Introduce dark brown leather oxford shoes to this look to instantly jazz up the outfit. As you can see, this ensemble is a really great choice, especially for transeasonal weather, when the temps are falling. And if we're talking fashion for 30-year-old gentlemen, this ensemble looks good on most guys.