Louis Garneau P 09 Bicycle Helmet. A true revolution in aerodynamic helmets, the Louis Garneau P 09 is designed to be faster than the competition. The P 09 Bicycle Helmet utilizes the innovative technology of the Vorttice Bicycle Helmet with improved aerodynamics, improved ventilation, and an improved lens system. The Bicycle Helmet's frontal surface is reduced to a minimum, making the Bicycle Helmet more compact and able to cut through wind's resistance. The inferior part of the tail is reversed for a better airflow at the shoulders, and a Speed Port allows air that enters at the front of the Bicycle Helmet to exit through vents behind the ears and release any pressure. A better vent position combined with additional and deeper evacuation channels allow a better airflow for an improved ventilation. The improved lens system includes a visor that lifts up for a fast and easy transition, and that can be easily removed using just one hand.