Go for something casually neat and trendy in a charcoal shawl cardigan and brown chinos. And if you wish to immediately up the style ante of your look with a pair of shoes, complete your getup with brown suede chelsea boots. As you can see, this combination is a really good option, especially for unpredictable fall weather, when the temperatures are getting lower. Rock this combo to demonstrate the world your maturity even as a younger gentleman.