The Vee Bottom flex is a finger fin. It has a larger base that goes into a really narrow body and tip. It also has more rake which all adds up to make an exciting fin that keeps you on your toes.
This fin range comes in a larger size to ensure that enough of your long fin is in the water to keep you in control as you are powering through high-speed turns. The fin is made for wider, flat panel, vee boards, where you have all the speed and want some control without losing that wild looseness that low-area fins have.