The Bell Pro‑TX underwear top in white (Large) meets SFI 3.3/5 standards for racing base layers, giving drivers a certified undergarment option in a larger size. Designed to be worn under competition suits and labeled for clear size selection, it fits into the Pro‑TX apparel family. Confirm the listed size against your measurements to ensure the required coverage and a compliant fit for sanctioned events.
Bell Pro-TX Underwear Top White Large SFI 3.3/5