A white short sleeve shirt and light blue jeans are wonderful menswear staples that will integrate really well within your day-to-day off-duty rotation. White and navy athletic shoes will add edginess to an otherwise mostly classic outfit. Keep this outfit in your front hall wardrobe when spring sets it, and rest assured, you'll save a lot of time getting dressed on more than one occasion. When it comes to casual style for middle-aged men, this combo is perfect.