Go for a pared down yet casually cool option putting together a navy hoodie and jeans. To give your overall ensemble a more relaxed feel, complete this outfit with a pair of black canvas work boots. Laid-back combos for older gentlemen aren't actually that hard, as you can see.
Consider teaming a navy hoodie with jeans for an easy-to-achieve menswear style. When it comes to shoes, go for something on the dressier end of the spectrum by wearing dark brown leather desert boots. All in all, a good example of smart casual fashion for mature gents.