With a full single concave that starts in the nose and blends into deep double concave through the back half of the board in turn creating more lift and drive. This allows you to get more speed and flow in smaller, weaker waves, but also has enough rail curve to work even when the waves get bigger and hollower.
It holds the volume throughout the length of the board so you can go 1 to 2 inches shorter and 1/4 to 1/2 wider than your standard all rounder but stay around the same thickness as you would usually ride.
