A dark green blazer and a dress shirt are absolute essentials if you're piecing together a smart wardrobe that matches up to the highest sartorial standards. Let your sartorial credentials really shine by complementing this ensemble with a pair of black leather derby shoes. This outfit is a striking illustration that you don't have to give up style for practicality during the colder months. So pay attention and you'll be the sharpest dressed teenager in the room.