A big yes to this relaxed combination of a charcoal denim shirt and a crew-neck t-shirt! Give an easy-going vibe to this look by sporting a pair of white athletic shoes. Needless to say, it's easier to work through a summertime day in a easy and breezy getup like this. Think it's hard for 40-year-old gentlemen to nail modern off-duty dressing? This pairing should prove you otherwise.