Nomex Underwear Large SFI

The Nomex Underwear Large SFI from RJS Safety is an essential choice for serious automotive enthusiasts, professional racers, and mechanics who work in high-heat environments or performance vehicle modifications. This fire-resistant base layer is designed to provide critical thermal protection in situations where flammable fuels and ignition sources are present.

Nomex fabric has become the industry standard for motorsports safety gear due to its ability to resist ignition and self-extinguish when exposed to flame, unlike conventional cotton or synthetic blends. RJS Safety engineered these Nomex underwear garments to meet SFI Foundation specifications, ensuring compliance with the certification standard required for legitimate motorsports competition and professional racing programs.

Professional drag racers, road course drivers, and fabricators working with fuel systems or turbo installations benefit most from SFI-rated Nomex base layers as a first line of defense against heat and flames. The Large size offers a comfortable, non-restrictive fit that layers seamlessly under driving suits, race suits, or heavy protective clothing without compromising mobility during performance driving or extended mechanical work sessions.