For an off-duty outfit, team a beige wool turtleneck with white jeans — these two pieces work pretty good together. And if you want to easily up your ensemble with a pair of shoes, complete your ensemble with black leather casual boots. In the winter season, when warmth is everything, it can be easy to settle for a less-than-stylish ensemble. This ensemble, however, is a vivid example that you totally can stay comfortable and remain stylish at the same time during the winter season. As a 30-something gentleman, you probably want to start dressing more professionally. If that's the case, outfits like this are a lifesaver.