Fire-resistant undergarments provide a dramatic increase in protection when worn with a driver's suit. Flame resistant underwear and socks are required by many race sanctioning bodies. OMP’s Tecnica series Long Johns are the professional choice: high quality racing underwear. These long johns are made with highly breathable fabric inserts in crucial areas around the garment. External flat seams add to comfort. Per FIA requirements, there is no front fly opening to sacrifice safety. OMP Tecnica Long Johns are FIA 8856-2000 homologated.