A brown crew-neck sweater and tobacco jeans are among the crucial items in any man's great casual sartorial collection. Round off with casual boots to completely switch up the look. In the winter season, when practicality is key, it can be easy to surrender to a less-than-stylish look. This look, however, is a vivid example that you totally can stay comfy and remain equally stylish in the winter season. This combo demonstrates that as a 30-something Millennial gentleman, you have a wide array of style options.