This casual combo of a navy blazer and a polo is a tested option when you need to look dapper but have zero time to assemble an outfit. Give an added touch of class to this ensemble by finishing off with a pair of brown leather oxford shoes. During the winter season, when warmth is top priority, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, is a striking illustration that you can actually stay comfy and remain equally stylish in the winter season. Those who wonder how to dress stylishly in your thirties, you have your answer.