This combo of a long sleeve shirt and white cargo pants makes for the ultimate casual style for any modern gent. And if you need to immediately elevate this ensemble with shoes, why not add dark brown leather desert boots to the mix? As the weather improves, it's time to get rid of those bulky winter gear and choose something lighter, like this look here. And if we're talking casualwear for 50-year-old gentlemen, this look is a good look on almost any gentleman.