SFI 3.3 FR Underwear Bottom Black XSM

The ALLSTAR PERFORMANCE SFI 3.3 FR Underwear Bottom in Black X-Small is a purpose-built racing undergarment designed for both professional and amateur drivers who require compliance with SFI Foundation safety standards during high-performance track events and motorsports competition. This base layer is essential for anyone participating in racing environments where elevated underhood temperatures and fire hazards are present.

Constructed to meet the SFI 3.3 specification, this underwear incorporates fire-resistant materials that fulfill rigorous burn-through and thermal protection requirements. The snug, form-fitting profile ensures effective layering under racing suits without adding bulk or restricting movement, allowing for optimal performance on the track.

Compatible with SFI-rated upper garments and suits, this underwear is an indispensable component of any serious racer's safety system. Drivers competing in various sanctioned racing series, including SCCA, NASA, and IMSA, will find this SFI 3.3-certified underwear to be a critical addition to their safety gear.