Full Carbon, TEXTreme outer layer (unique design). Weight according to new standards (42 pounds) weight. Headrest included. Low COG (center of gravity). NASCAR approved (69G sled test - SFI homologation - NASCAR quasi-static test 2015). Size M. Shell made of asymmetrical seat + headrest. Designed together with one of the most prestigious NASCAR teams. The seat is used and appreciated by several pilots.