This polished combo of a navy suit and a brown v-neck sweater is a favored choice among the stylish men. And if you wish to easily dress up your getup with one piece, why not complement your look with a pair of black leather dress boots? When it comes to dressing for autumn, nothing beats a kick-ass combo that transitions easily between seasons. So if you need dressing tips for gentlemen in their 40s, this pairing is ideal.