A shawl cardigan and dark brown chinos are the kind of casually sleek pieces that you can wear a multitude of ways. When not sure about the footwear, add a pair of dark brown leather casual boots to the equation. In winter, when functionality is paramount, it can be easy to surrender to a less-than-stylish getup. This getup, however, is a striking example that you totally can stay warm and remain equally stylish during winter. If you're wondering what you should wear as a gent in his thirties, this combo gives a good idea.