Underwear Top White X-Large SFI-1

The Pyrotect Underwear Top White X-Large SFI-1 is a professional-grade racing base layer engineered for drivers who demand safety and comfort in high-heat, high-performance environments. Built to meet SFI 3.3/1 certification standards, this long-sleeve nomex undershirt serves as the critical first line of thermal protection under racing suits, fire suits, and heavy-duty automotive work gear. Whether you're logging hours on the track, competing in motorsports, or working extended shifts in high-temperature engine bays, this underwear top provides reliable flame-resistant protection that integrates seamlessly into any racing or automotive professional setup.

Constructed from durable nomex material, the Pyrotect SFI-1 rated underwear top offers inherent flame resistance without compromising breathability or comfort during extended wear. The high-collar design and long sleeves ensure maximum coverage and protection, while the fitted cut eliminates excess fabric that could bunch under racing suits or protective outerwear. The X-Large sizing accommodates athletic builds and provides unrestricted movement during intense driving or mechanical work. At only 0.85 lbs, this base layer adds minimal bulk while delivering the thermal barrier necessary to meet SFI Foundation safety standards required by most sanctioning bodies and professional racing programs.

This underwear top is essential for professional drivers, motorsports competitors, and serious automotive enthusiasts who wear racing suits, fire-resistant suits, or work in extreme-temperature environments. The SFI 3.3/1 certification ensures compliance with major racing sanctioning bodies including NASCAR, NHRA, and road racing associations. Wear it as your base layer beneath any SFI-rated fire suit to maximize protection and extend the thermal life of your outer racing gear. The white colorway offers visibility in pit environments and pairs easily with any racing program's color scheme or garage uniform system.