Prove that you do smart casual menswear like a visionary in the menswear department in a black and white blazer and brown chinos. Add a pair of brogue boots to this ensemble and you're all set looking smashing. In the winter months, when practicality is prized, it can be easy to settle for a less-than-stylish getup in the name of practicality. However, this getup is a practical illustration that you totally can stay comfortable and remain stylish during the winter months. Looks like this go a long way towards maturing your style as a 30-year-old gentleman.