Simpson CarbonX Short Sleeve Crew Neck Shirt - Black Size:Medium but the fact of the

but the fact of the matter is that they are anything but

Fire retardant lining for improved safety and comfort

Black / White Stripe

2A/5 certified

Simpson CarbonX Short Sleeve Crew Neck Shirt - Black Size:Medium but the fact of theCarbonX 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,