For a look that's very simple but can be flaunted in a multitude of different ways, consider wearing a blue long sleeve shirt and a white crew-neck t-shirt. And if you wish to easily up the style ante of this look with shoes, why not complement your look with a pair of brown suede desert boots? This getup is a nice choice when spring sets it. A no-brainer ensemble proper for gentlemen over 40 who like casual dressing.