Vents: 5. Golf Ball Effect: Texturized surface on the front of the helmet helps 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. Windscreen compatible. Weight: 11.3 oz/320 g. Certifications: CPSC-ASTM-CEN-AS 2063* (*Order 1408958 for Australian certification). | 
