Simpson Carbon-X Fire Resistant Racing Undershirt - SFI 3.3 AP-RL-ST Note: If you have the

Note: If you have the Sport Design package

it also has an integrated adjustment point that will allow you to fine tune

anti-abrasion material for protection while karting

Customizable Appearance: With a range of materials and finishes

Simpson Carbon-X Fire Resistant Racing Undershirt - SFI 3.3 AP-RL-ST Note: If you have theWearing fire retardant underwear under your SFI rated suit increases the protection against fire. CarbonX offers excellent protection with amazing fire resistant characteristics, inherent moisture wicking properties, and comfort. It is inherently flame resistant, will not burn, melt, or ignite when subjected to direct flame. Black only.