Underwear Top Black X-Large

The PXP RACEWEAR Underwear Top Black X-Large is a purpose-built fire-resistant base layer engineered for high-heat racing environments and professional motorsport applications. This long-sleeve top with high collar construction meets SFI 3.3 safety certification, the recognized standard for underwear worn beneath racing suits and protective gear in sanctioned motorsport competition and closed-course driving events.

The garment is constructed from a Kermel and Lenzing FR blend, a proven combination of inherently flame-resistant fibers designed to provide thermal protection while maintaining breathability during extended wear. The high collar and long-sleeve design minimize exposed skin and create a continuous protective layer when worn under a racing suit, reducing the risk of thermal injury in the event of fire or extreme heat exposure. The X-Large sizing accommodates broader builds while maintaining the form-fitting profile necessary for comfort under race suits without excess fabric bunching.

This is the essential foundation layer for professional and amateur racers, track drivers, and motorsport competitors who require certified fire protection under their racing gear. Serious racers understand that SFI 3.3 certification is non-negotiable for sanctioned events—this top delivers that compliance while maintaining the lightweight, low-bulk design that permits unrestricted movement and comfort during high-performance driving sessions. The black colorway remains invisible under translucent or light-colored racing suits while hiding stains and moisture during heavy exertion.