Beat the competition with the lightest open aero road helmet in its class mets engineers have redefined the parameters of aerodynamic efficiency through meticulous hours spent in the wind tunnel and incorporating feedback from team mtn qhubeka the streamlined and compact shape of the met rivale helmet saves 3 watts at 50kmh and weighing only 230g med ce the venturi effect allows for maximum air intake to keep the head cool without sacrificing aerodynamics the rivale is the new standard o