This combination of a charcoal blazer and a black nylon blazer is a tested option when you need to look effortlessly smart in a flash. Introduce a pair of dark brown leather brogues to this look and ta-da: the ensemble is complete. It's is an obvious option if you're picking out a cool summer-to-fall outfit. This combo illustrates that dressing well as you reach your 30s is easier than one might think.