Want to inject your closet with some fashion-forward cool? Pair a navy crew-neck sweater with navy chinos. For an on-trend hi-low mix, complete this look with black leather casual boots. So if you're looking for a great yet age-appropriate pairing, look no further.
If you're looking to take your casual style to a new level, team a navy crew-neck sweater with navy cargo pants. Black leather casual boots will breathe an added dose of polish into an otherwise standard look. All in all, a good example of smart casual fashion for gentlemen in their forties.