ESSENTIAL FIRE PROTECTION FOR RACING DRIVERS Engineered for motorsport safety, our 100% Aramid underwear set provides SFI 3.3 certified thermal defense without compromising mobility – your critical first layer in car and kart racing. CORE TECHNOLOGY Inherent Flame Resistance: Pure Aramid fibers self-extinguish within 2 seconds (per SFI 3.3 afterflame standards) and withstand 800°F/427°C direct exposure. Structural Integrity: Maintains protective properties through 50+ industrial washes – no chemical treatments required. TRACK-OPTIMIZED DESIGN Targeted Reinforcement: Double-layer Aramid weave at high-wear zones (inner thighs/seated back) resists abrasion from racing seats. Dynamic Comfort: Pre-curved elbows/knees and stretch panels enable full steering wheel/foot pedal articulation.