Underwear Top FR Black Medium SFI 3.3

The Underwear Top FR Black Medium SFI 3.3 by RaceQuip is a professional-grade fire-retardant base layer engineered for motorsports competitors, pit crew, and safety-conscious drivers who demand reliable thermal protection in high-heat environments. This garment serves as essential underdressing beneath racing suits, providing a critical barrier against flame exposure during competitive events, driver training, and pit operations. The long-sleeve, high-collar design ensures maximum coverage and compliance with SFI Foundation specifications required by sanctioning bodies across motorsports disciplines.

Constructed from a fire-retardant blend fabric, this underwear top meets SFI 3.3 certification standards, which govern thermal and flame performance for motorsports protective apparel. The high collar and extended sleeves maximize protected skin surface, while the fitted medium sizing ensures comfort without excess bulk under a racing suit. The black colorway minimizes heat absorption and reduces visibility of perspiration during competition, making it both functional and practical for extended wear in cockpit environments.

Drivers competing in sanctioned racing events—including stock car, open-wheel, sports car, and drag racing—rely on SFI 3.3-certified base layers as mandatory safety equipment. The medium size accommodates standard adult frames and pairs seamlessly with full racing suits to create a complete fire-resistant system. Whether you're preparing for your first track day or maintaining a professional racing wardrobe, this RaceQuip base layer delivers the certified protection and durability required for serious motorsports participation.