Pair a cardigan with a dress shirt for a clean refined ensemble. Feel somewhat uninspired with this getup? Introduce navy leather derby shoes to shake things up. In the colder months, when functionality is the priority, it can be easy to surrender to a less-than-stylish ensemble. But this ensemble is a stark illustration that you totally can stay toasty and remain equally stylish during the colder months. This outfit looks great on mature gentlemen.