Combining a navy suit with a black waistcoat is a savvy idea for a smart and refined look. And it's amazing what a pair of brown leather monks can do for the outfit. This combo is probably what you're looking for as a guy in his thirties.
Black Waistcoat with Navy Suit Dressy Outfits In Their 30s
We're loving how this combo of a navy suit and a black waistcoat immediately makes a man look classy and sharp. Finishing off with a pair of dark brown leather double monks is the simplest way to inject a touch of stylish nonchalance into this ensemble. A great illustration for any man who wonders how to dress like a grown man.