CarbonX® 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. Nomex® or CarbonX® Underwear underneath a racing suit will dramatically improve Thermal Protection Performance (TPP) in the case of an accident involving fire.
Features:
- SFI 3.3 approved, includes SFI tag
- Designed to deliver the ultimate in base layer thermal protection
- TPP rating of 13 cal/cm2 and zero seconds after flame
- Lightweight, patented blend of high-performance fibers
- Double jersey interlock knit
- Made in the USA
When it comes to automotive safety equipment, few companies have been as influential and respected as Simpson. Simpson produces SFI- and FIA-approved suits, gloves, helmets, shoes, and Hans devices that are synonymous with high quality and help to save lives every day. Racing and riding is more than what you do, it's a part of who you are. We get it, because it's who we are too. Since 1959, racers and motorcycle riders have trusted 
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