For an ensemble that's very easy but can be manipulated in a multitude of different ways, consider teaming a white long sleeve t-shirt with navy jeans. As for footwear, introduce a pair of charcoal leather low top sneakers to this look. So if it's a hot hot weather day and you want to look seriously stylish without exerting much effort, this outfit will do the job in next to no time. A no-brainer pairing proper for 40-year-old gentlemen who prefer to dress casually.