This semi-casual combo of a navy and white polo neck sweater and cargo pants is super easy to throw together without a second thought, helping you look amazing and prepared for anything without spending too much time going through your wardrobe. Tap into some Idris Elba dapperness and add black derby shoes to the equation. As days are getting cooler, you'll discover that a look like this is perfect for this time. This getup suggests how to wow in smart dressing as a teenager.