These racing suit jackets are single layer SFI-1 fire resistant rated to ensure your safety during a race. FRC - Fire retardant cotton. Nomex cuffs and zipper liner. Shoulder epaulets. SFI 3.2A/1. Sizes S-2XL. Available in Black, Blue or Red. jacket only. Learn more about SFI and TPP Ratings by reading our tech article. What are SFI and TPP Ratings? Learn how to properly wash and care for your fire racing suit by reading our tech article; Racing Suit Cleaning and Care.