An entry level aero helmet with the golf ball effect technology that helps achieve better laminar airflow. The Chrono-leggera is light enough to make you forget you are wearing a helmet. - Weight: 12.3 oz/348 g - Certifications: CPSC-ASTM-CEN-AS 2063* (*Order 1408958 for Australian certification) - Vents: 5 - Bonded Construction: Manufacturing process binding the microshell to the EPS without using conventional tape. - Golf Ball Effect: Texturized surface on the front of the helmet to achieve better laminar airflow. - Evacuation Channels: Moisture channels provide better airflow and moisture wicking. - Spiderlock Elite: Adjustable and detachable rack-and-pinion mechanism using only one hand to stabilize the helmet on the head. It is provided with ergonomic padding. - Steplock Divider: Cam locking device to quickly adjust strap position. - Sealed Airdry Padding: Washable sealed adjustment padding for enhanced durability, ergonomic design for optimum comfort. - Featherweight: Helmet light enough to make you forget you are wearing it. - Windscreen Compatible: To complete the kit, the Windscreen lens can be fixed on TT helmets. Aerodynamic performance is improved, and when smoked, it prevents you from getting dazzled by the sun.