A camel overcoat and black skinny jeans are a good combo worth incorporating into your day-to-day casual rotation. When it comes to footwear, this outfit pairs really well with black leather casual boots. During winter, when warmth is top priority, it can be easy to settle for a less-than-stylish ensemble. However, this ensemble is a stark illustration that you can actually stay snug and remain stylish during winter. Smart casual ensembles for 20-year-old gentlemen aren't actually that hard, as you see.