Premium Nomex knit and premium leather are used to make the G-FORCE G1 RaceGrip gloves. The G-FORCE G5 RaceGrip gloves are designed for those who require the stringent SFI-5 requirements while giving the racer the lightweight feel and flexibility of the G-FORCE G5 G1 RaceGrip glove. The G-FORCE GF Pro Series Race Glove was designed to meet all the demands of today's amateur and professional drivers.