One of the best ways for a man to style out a black shirt jacket is to wear it with a crew-neck t-shirt for a casual outfit. The whole getup comes together if you complement your ensemble with a pair of black canvas espadrilles. And if we're talking casual clothing for over-40 guys, this ensemble looks good on almost any gentleman.
Why not wear a black shirt jacket with a crew-neck t-shirt? As well as super functional, both of these items look good when worn together. And if you need to easily up this look with a pair of shoes, why not complete this look with dark brown leather casual boots? This combo is a vivid example men in their 40s can very well slay in the fashion department.