Simpson CarbonX Underwear Bottom - Black Size:Large flame resistance & thermal insulation

flame resistance & thermal insulation to combat heat stress and fatigue

it can be outfitted with any combination of electronics

the KC7 is designed to minimize helmet weight for karting drivers under the age of 18 and perfect for the next generation of champions as they start their racing career in karting

Stilo has two separate shell sizes for this helmet

Simpson CarbonX Underwear Bottom - Black Size:Large flame resistance & thermal insulationCarbonX and and Ultimate underwear is made from double jersey interlock knit comprised of a patented blend of high performance fibers and has extraordinary thermal protective properties. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame. Nomexandand or CarbonXand andUnderwear underneath a racing suit will dramatically improve Thermal Protection Performance (TPP) in the case of an accident involving fire.