This easy to see, white PVC round starting numbers disc is an essential for your competition kit. The competition disc has three number spaces, all with the numbers 0-9 to slot into them. The spaces are covered over by clear plastic to protect them from rain and wind but still allowing them to be easily seen at competitions. The disc easily attaches to the cheek of the bridle, the martingale, or breastplate. Elastic and hooks make it easy to attach.