K1 Race Gear Champ Race are specifically designed to meet the needs of racers in any class or division of racing. The Nomex construction earns the Champ shoes a SFI 3.3/5 rating , meaning they can be used even in the highest of NASCAR sanctioned competition. In addition to the high quality Nomex constrction, the leather and rubber soles give you increased grip and pedal feel. Champ Racing Shoes are available in standard sizes from 6.5-14.