Extremely aerodynamic shape the mantarsquos extremely aerodynamic and low profile shape provides unsurpassed performance in the wind tunnel with a saving of 10 watts at 50kmh compared to other aero road helmets whilst the strategically placed airflow converge vents and naca crown vents ensure your head is kept cool without increasing drag light weight weighing in at only 200 grams the manta is the lightest closed aero helmet on the market discover mantarsquos fast colors be ahead i