Description
The Simpson Racing CarbonX® Ultimate™ Underwear in Black (XX-Large) is engineered to provide exceptional thermal protection, lightweight comfort, and professional-grade motorsport safety. Constructed from a patented blend of high-performance fibers in a double jersey interlock knit, this premium base layer delivers outstanding fire-resistant performance without sacrificing comfort.
CarbonX® material is inherently flame resistant and will not burn, melt, or ignite when exposed to direct flame. Designed to be worn beneath a racing suit, the CarbonX® Ultimate™ underwear significantly improves Thermal Protection Performance (TPP) during fire-related racing incidents.
Featuring a TPP rating of 13 cal/cm² and zero seconds after flame, this base layer is built for racers seeking maximum protection in demanding motorsport environments. Its lightweight construction enhances mobility and comfort during extended race sessions.
SFI 3.3 approved and made in the USA, the Simpson CarbonX® Ultimate™ Underwear delivers premium fire-retardant protection trusted by professional racers.
Key Features:
SFI 3.3 approved with SFI tag included
CarbonX® inherently flame-resistant material
TPP rating of 13 cal/cm²
Zero seconds after flame performance
Double jersey interlock knit construction
Lightweight patented high-performance fiber blend
Designed for superior thermal protection under racing suits
Made in the USA
Color: Black
Size: XX-Large
Specifications:
Brand: Simpson Racing
Product Line: CarbonX® Ultimate™ Underwear
Color: Black
Size: XX-Large
Material: CarbonX® high-performance fiber blend
Certification: SFI 3.3 approved
TPP Rating: 13 cal/cm²
Construction: Double jersey interlock knit
Application: Motorsport, racing, fire-retardant base layer
