Underwear Bottom White X-Large FIA

The Underwear Bottom White X-Large FIA by PYROTECT is a specialized fire-retardant base layer engineered for motorsports competitors, pit crew, and safety-critical racing environments. FIA approval means this garment meets the stringent homologation standards required by international motorsport governing bodies, ensuring compliance with racing safety regulations. Drivers and support personnel rely on this layer as a critical component of their fire protection ensemble, worn beneath or alongside racing suits during competition and high-risk activities.

Constructed from Nomex, a proven aramid fiber, this underwear bottom delivers inherent flame resistance without diminishing breathability or comfort during extended wear. Nomex does not ignite, melt, or drip when exposed to flame or extreme heat, providing a reliable thermal barrier that protects skin. The X-Large sizing accommodates a full range of motorsport body types, and the white colorway maintains visibility and meets technical regulations in many racing series. The pants-style cut provides full-leg coverage, essential for protecting the thighs and lower torso where exposure risk is highest during vehicle incidents.

Professional racers, amateur circuit competitors, and pit crew benefit most from layering this FIA-approved base under SFI or FIA race suits to build redundant thermal protection. The lightweight construction (0.8 lbs) ensures minimal heat retention while maintaining durability through repeated race days and laundering. Compatibility with all major racing suit brands and sanctioning bodies makes this a universal choice for anyone serious about motorsport safety. For optimal protection, pair with an FIA-approved upper layer and follow manufacturer washing instructions to preserve flame-retardant properties across multiple seasons of use.