Underwear PRO-TX Bottom White 2X Large SFI 3.3

The BELL Underwear PRO-TX Bottom White 2X Large SFI 3.3 is a professional-grade fire-retardant base layer designed for drivers, pit crew, and motorsports enthusiasts who demand maximum protection in high-heat environments. Whether you're running road course events, drag racing, or working in engine bays where sparks and heat are present, this bottom layer sits as your first line of defense against thermal hazards. SFI 3.3 certification means it meets the Sport Car Club of America's rigorous safety standards for racing apparel, making it the choice for serious competitors and shop professionals alike.

The PRO-TX construction uses a fire-retardant blend fabric engineered to resist ignition and minimize heat transfer to skin during thermal exposure. The white colorway provides visibility in dim shop lighting and race environments while maintaining the clean aesthetic expected in professional motorsports settings. At 2X Large sizing, this bottom offers a comfortable fit under driving suits, full racing uniforms, or worn as a standalone base layer during hot summer track days. The lightweight construction at 0.73 lbs ensures minimal bulk and allows unrestricted movement during extended driving sessions or pit work, critical when precision and comfort directly impact performance.

This garment pairs seamlessly with BELL racing suits, fire-retardant tops, and professional motorsports kits across all racing disciplines. Mechanics and fabricators benefit equally, using PRO-TX bottoms as protective workwear in high-risk environments. Layering with matching BELL PRO-TX tops creates a comprehensive SFI-certified fire protection system. The 2X Large sizing accommodates drivers and crew members across a wide range of builds, and the durable fire-retardant blend withstands repeated washing and storage without degradation of protective properties—essential for gear used regularly at the track or shop.