Underwear Btm ZX EVO V3 White XSM/SML Long

The Underwear Btm ZX EVO V3 White XSM/SML Long from ALPINESTARS USA is a specialized base layer engineered for motorsports professionals and enthusiasts who demand fire-resistant protection under their racing suit. Designed to meet stringent racing safety standards including SFI 3.3 certification and FIA approval, this garment provides essential thermal protection and comfort during extended track sessions, endurance racing, or high-performance driving events where heat exposure and safety compliance are non-negotiable.

Constructed from advanced Lenzing FR fabric, the ZX EVO V3 base layer delivers inherent flame resistance without compromising breathability or comfort. The long-cut design ensures full coverage and seamless integration under racing suits, while the lightweight construction—weighing just 0.55 lbs—minimizes bulk and allows unrestricted movement in the cockpit. The white colorway maintains visibility for safety checks and integrates easily into any racing kit, while the SFI 3.3 and FIA approval certifications guarantee compliance with international motorsports governing bodies and sanctioning organizations.

This base layer is ideal for professional drivers, amateur racers, and motorsports participants who wear a full racing suit for extended periods. Whether competing in road racing, circuit racing, or high-speed driving events, the X-Small/Small sizing accommodates lean to average builds and works seamlessly beneath any FIA-homologated racing suit. The long-cut configuration ensures coverage during seated driving positions, making it the preferred choice for anyone seeking certified, reliable thermal and flame protection during competitive motorsports activities.