The Vento KinetiCore's lightweight, all-new aerodynamic design is engineered to go faster with no compromise. Built for those who want more than just marginal gains, the Vento KinetiCore provides superior comfort thanks to the Lazer ScrollSys adjustment system that lets you alter the fit on the move with a simple scroll of the belt. Features: Aerodynamic Performance: Designed in sprint position at a 15 degree angle with a reduced frontal surface 360 retention with ergonomic belt: Refine your helmet's fit by scrolling the easy-to-use Lazer ScrollSys belt for the ultimate fit Venturi ventilation system: Lazer's advanced ventilation system channels draws cool air into the helmet and expels hot air through the rear of the helmet to help cool you down when you're pushing hard No pressure points and more ventilation: The floating front headband increases airflow and eliminates pressure points, to keep you more comfortable Eyewear docking silicone: Keep your eyewear safe when you're not wearing by storing them securely in the vent docking system LED light compatibility: Increase safety and visibility by attaching the Universal Lazer LED at the rear of the helmet Lightweight: 24% lighter than Lazer Bullet 2.0 MIPS M CE Reduced Plastics: 90g less plastics used than in Lazer Bullet 2.0 MIPS M CE Weight: 290g (size Medium) Sizes: S 52 - 56cm / M 55 - 59cm / L 58 - 61cm Rated 5/5 stars by Virginia Tech* *Since 2011 Virginia Tech have been providing unbiased helmet ratings that allow consumers to make informed decisions when purchasing helmets. Their impact tests evaluate a helmet's ability to reduce the linear acceleration and rotational velocity of the head resulting from a range of head impacts a cyclist might experience. Helmets with more stars provide a reduction in concussion risk for these impacts compared to helmets with fewer stars.