A dark green bomber jacket and a waistcoat are a classy look that every sharp man should have in his arsenal. For something more on the daring side to finish your ensemble, introduce a pair of black and white canvas low top sneakers to the equation. It's a viable pick when it comes to putting together a knockout look for summer-to-fall weather. This ensemble is a good illustration gentlemen in their forties can very well slay in the style department.