The formula for off-duty menswear style? An olive camouflage parka with navy jeans. And it's amazing how black athletic shoes can transform an outfit. During winter, when functionality is top priority, it can be easy to settle for a less-than-stylish outfit. This outfit, however, is a striking example that you can actually stay comfy and remain equally stylish during winter. When it comes to casual dressing ideas for 20-something gents, this getup is ideal.