KYT R1R Race Helmet. Shell: - Tri-Composite Fiber The outer shell is made of Tri-Fiber composite, a mix of kevlar, carbon and fiber glass, to ensure a better impact resistance and lighter weight - 3 Shell Sizes - Wearable Glasses Aerodynamics: - Wind Tunnel Tested. The aerodynamic performance is optimized to allow the best comfort at all speeds. - Aerodynamic spoilers. A system of interchangeable spoilers has been designed to optimize aerodynamics depending on use. Ventilation: - Air Vents. The