Volante KinetiCore is Lazer's fastest helmet. Tested in wind tunnels to have features that are needed to maximize one's speed on a solo effort. It is designed to accompany the fastest racers in the world. Everything works with and for optimal airflow, literally shaped by air. Features: Easy vertical adjustability: The Lazer Advanced TurnSys system provides a tailored fit that's easy to adjust on the move with a simple turn of the dial Shaped by air: The helmet's long tail is designed and constructed for Aerodynamics. Everything works with and for optimal airflow, literally shaped by air Optimized visibility: The smoked panoramic lens comes with great features: an anti-scratch film on the outside, an inwards bending to reduce drag and a magnetic attachment for easy adjustment. Popping the lens on or off, just let the magnets do the work Stay fresh: The Polygiene® padding contains aerated holes, which are strategically placed in front of the vents to allow the air to flow through Eyewear friendly: Recesses in the helmet shape remove pressure on the sides of the head caused by the arms of sunglasses Superior aerodynamic performance: Computer designed, wind tunnel tested and race proven to provide maximum aerodynamic performance Ponytail friendly: An open space in the tail part provides room to stuff your ponytail Lightweight: 4% lighter than Lazer Volante M CE Reduced materials: 20g less plastics used than in Lazer Volante M CE Weight: 455g (size Medium) Sizes: S 52 - 56cm / M 55 - 59cm