This combination of a navy waistcoat and black jeans is a never-failing option when you need to look casually neat but have no extra time to spare. A pair of navy leather chelsea boots is a good choice to finish your outfit. In the winter season, when warmth is top priority, it can be easy to surrender to a less-than-stylish look in the name of convenience. But this look is a bright example that you can actually stay comfy and remain equally stylish in the winter season.