One of the most elegant ways to style out such an essential item as a waistcoat is to wear it with navy jeans. To give your overall look a more casual feel, complete your outfit with a pair of desert boots. A safe bet for over-40 gents who are looking for age-appropriate looks.
For elegant style with a modern take, go for a waistcoat and white dress pants. If you want to easily dress down your ensemble with one single item, why not complement this getup with desert boots? If you're wondering how you should dress as an over-40 guy, this pairing gives a proper idea.