A grey overcoat looks so classy when paired with a grey three piece suit. For something more on the off-duty side to complete this look, complement your ensemble with a pair of brown leather double monks. During the colder months, when functionality is imperative, it can be easy to surrender to a less-than-stylish outfit in the name of convenience. However, this outfit proves that you totally can stay comfy and remain stylish during the colder months. Sport this outfit to create a more conservative look as a gentleman in his thirties.