SFI 3.3. The NEW Simpson Pro-Fit Base Layers are our most comfortable and best fitting base layers. Constructed in Italy using the latest techniques, the Pro-Fit provides superior softness and stretchability. The trusted Nomex ® material gives you an added layer of protection while maintaining breathability and comfort.Product Description: Underwear Bottom Fire Retardant Pro-Fit SFI 3.3 Nomex White Medium/Large Sold IndividuallyStay safe on the track with Simpson Racing, your trusted source for high-performance motorsport safety equipment since 1959. From state-of-the-art helmets to top-of-the-line racing suits and safety harnesses, Simpson Racing has everything you need to compete safely on the race track. 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, NASCAR, racing enthusiasts and motorcycle riders have trusted Simpson Performance helmets, head and neck restraints, harnesses, racing suits, gloves, shoes, off-road seats, window nets, drag parachutes and more to provide an unparalleled level of comfort, performance and protection.
