Dedicated Racer. Designed for the racer with a day job - where every race weekend decision has to be carefully considered during the long week - the Race Star Flex DLX is the prime choice. This year, Bell has re-engineered the champ, shaving its weight by 10% and updating the headform for additional comfort. Race Star Flex DLX now features Bell ProTint™ photochromic technology on its Class 1 optics Panovision shield, as well as new speaker pockets and triple-density cheek pads with added comfort lining. From a 3k carbon fiber shell to Bell's proprietary Flex liner for progressive energy management, this helmet is packed with cutting-edge technology to deliver premier performance. The desire to win starts in the head. Construction: 3k Carbon shell. Ventilation: Velocity Flow Ventilation™ system for maximum cooling. Energy management: Flex Energy Management interior liner.