This is accomplished by combining a small, narrow frontal area with a trip wire on top of the helmet and a stubby tail at the rear. A compact helmet that allows riders to move their heads without disrupting their aerodynamic performance too much. The sides of the helmet shell are curved and drop down low enough to cover the ears, so reduce wind resistance. The Victor KinetiCore has a large visor to provide perfect visual clarity. The visor can also move forward to open up two ventilation ports that create airflow throughout the helmet.Features:Easy vertical adjustability: The Lazer Advanced TurnSys system provides a tailored fit thats easy to adjust on the move with a simple turn of the dialNatural head movement: A shorter tail with big outlet in the back allows all the benefits of an aero helmet without the discomfort or performance risk of a traditional long tailed helmet designOptimized visibility: The smoked panoramic lens comes with great features: an anti-scratch film on the out