This is it, the classic shape and super dark lens, and it goes by many names: JFK sunglasses, Risky Business, Wayfarer, Ray Ban, Blues Brothers, etc. Whatever you call them, these are the world's best selling classic sunglasses and possibly the coolest shades ever made. You've seen this style worn by countless celebrities, musicians, mobsters, and politicians for decades.
As Elwood said to Jake: "It's 106 miles to Chicago, we've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses."