7.5x5.75 race numbers, or race bibs as they are often called, are as fundamental to your endurance race as running shoes. You need them. Printed on weather and tear-resistant synthetic material. And we didn't become the nation's largest producers of race numbers by mistake. Our Endurance Sports team are all athletes, includes an experienced race director, and are educated in all things in the endurance racing world. They're ready to assist you with your event print needs today.