This combination of a tan blazer and blue jeans is great for off-duty situations. Add a different twist to an otherwise mostly dressed-down ensemble by wearing dark brown suede derby shoes. In the winter season, when comfort is above all, it can be easy to settle for a less-than-stylish look. However, this look is a practical illustration that you can actually stay comfy and remain stylish during the winter season. This look is most probably what you've been looking for as a 40-year-old guy.