This off-duty pairing of a charcoal harrington jacket and a blue chambray short sleeve shirt comes to rescue when you need to look cool in a flash. For something more on the smart side to finish this outfit, introduce navy leather derby shoes to the equation. Seeing as temperatures are dipping, this outfit appears a viable option for the transitional season. So if you're looking for a stylish and mature getup for a guy in his twenties, this one fits the task well.