This combo of a light blue short sleeve shirt and white chinos makes for the ultimate casual style for any gent. And if you wish to easily dress down your outfit with a pair of shoes, add a pair of brown suede sandals to the equation. Undoubtedly, it's easier to work through a warm warm weather afternoon in a breezy getup like this. Those wondering how to rock modern off-duty looks as you reach your 30s, you have your answer.