Combining an overcoat and a white mock-neck sweater is a fail-safe way to infuse manly refinement into your wardrobe. Why not finish off with a pair of white leather low top sneakers for a sense of stylish effortlessness? No doubt, a look like this will keep you warm and stylish, rain or shine. As a 30-something gent, you want to start dressing like an adult man. If that's the case, inspiration like this proves very useful.