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.

• 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
• Long or short sleeve crew neck top available
• Made in the USA

NOTE: Short sleeve crew neck top is not SFI certified.