Make a bomber jacket and a white long sleeve shirt your outfit choice to assemble an interesting and modern-looking casual outfit. Finishing off with a pair of dark brown suede loafers is a surefire way to give a touch of elegance to this ensemble. This ensemble is a viable option when it comes to putting together a standout outfit for in-between weather. This combo is a striking illustration 40-year-old gentlemen can very well slay in the fashion department.