For smart style with a clear fashion twist, make a charcoal double breasted blazer and a dress shirt your outfit choice. Black leather casual boots are guaranteed to add a dose of stylish casualness to your outfit. During winter, when warmth is prized, it can be easy to surrender to a less-than-stylish look in the name of functionality. This look, however, is a striking example that you can actually stay warm and remain equally stylish during winter. A solid ensemble to demonstrate the world your maturity as a 30-year-old gentleman.