I am selling a Lazer Genesis road bike helmet, the brand's top-of-the-range ultra-lightweight model. The helmet is in very good condition. Absolute lightness: One of the lightest helmets on the market (approx. 195g in size S). Maximum ventilation: Designed with 22 vents and internal cooling channels to keep your head cool during intense effort. Advanced Rollsys® system: Micrometric adjustment via a thumbwheel on top of the helmet for a perfect 360° fit without any pressure points... See more