Leatt 9.5 ADV Helmet Kit - CarbonULTIMATE HEAD, BRAIN AND EYE PROTECTION The ADV 9. 5 Carbon helmet kit provides ultimate protection and performance for adventurous riders. It is constructed from a six layer carbon matrix and four densities of impact foam, strategically fixed to maximize protection, reduce shell size and weight. Furthermore, it features Leatts patented 360 Turbine Technology, where the energy absorption of the turbines helps reduce the low speed impact energy to the