The Lazer Bullet 2.0 helmet answers the age-old dilemma of aero-aerodynamic ventilation. With its narrow shape and closed shell it is a really aerodynamic helmet, with a quick adaptation of the Airslide system. With its adjustability the Lazer Bullet 2.0 is a street racing helmet for the everyday life, which offers however a beach-fair aerodynamic achievement. If ventilation is required, the Airslide system can be used with the exhaust outlets at the back. If ventilation is of little importance, the entire Airslide system can be replaced with a closed cap for which the helmet becomes even more aerodynamic. Regardless of the configuration in which you use the venturi cap with side, rear and top side, in combination with the internal airflow channels. In addition, the Lazer Bullet 2.0 helmet will quickly and easily install the LifeBEAM technology to measure your heart rate or tilt sensor to monitor your head position on the bike.