One of the best ways for a man to style such a functional piece as a double breasted blazer is to team it with light blue jeans. If you want to easily tone down your look with one single piece, why not add a pair of white canvas low top sneakers to the mix? As you're maturing from a kid to an adolescent boy, you probably want to look a little older than your age. In this case, combos like this are a lifesaver.