A newly developed section shape, outline and profile give the HA range a remarkable "best of both worlds" ability to carve beautiful lines and easily stay high in the pumping power zone for maximum wave riding potential. The foil section is adjusted incrementally at points across the wingspan (evolutive section shape) to provide a big boost to gliding efficiency and consistent lift at various bank angles and flight speeds. For those already riding the previous generation Armstrong HA range, we recommend downsizing one foil size, for example: from the older HA925, move to the new HA880 to maintain familiar pumpability with a substantial overall performance increase.