Simpson Carbon-X Racing Undershirt

Enhance your track safety with CarbonX Fire-Retardant Underwear, engineered to increase thermal protection when worn beneath an SFI-rated suit significantly. Unlike treated fabrics, CarbonX is inherently flame-resistant, meaning it will not burn, melt, or ignite even when subjected to direct flame. Beyond its elite safety profile, this base layer features natural moisture-wicking properties and a soft, comfortable fit designed to keep drivers dry and focused during intense competition. Available exclusively in black, it is the ultimate professional choice for those who refuse to compromise on protection or performance.