Description Racing underwear is a 50% carbon fiber Nomex, woven together to offer the ultimate protection. These have TPP ratings of 14.5 which help ensure your safety. Sizes L-XL. Nomex top and Nomex pants have been lab tested and are rated SFI 3.3. 50% carbon fiber Nomex TPP rated 14.5 SFI rated 3.3 Sizes L-XL
