If you're a fan of casual combinations, why not take this combo of a white crew-neck t-shirt and blue jeans for a walk? If you need to easily smarten up this look with shoes, complete your outfit with a pair of dark brown leather boat shoes. If you're crafting a summer-friendly look, this here is your inspiration. Think it's hard for gentlemen over 40 to nail modern off-duty style? This pairing will prove you otherwise.