Champion Sports Referee Cards 10-Red and 10-Yellow (Set of 10) Bundle with 1 Performall Lanyard RWCD-10P Bundle includes 10 Red and 10 Yellow Champion Sports Referee Cardsand with 1 Performall Lanyard Performall Sports Lanyard measures approximately 32 inches in circumference making it ideal to wear around your neck; The lobster clasp on the end makes it snap to attached keys or a whistle Keep the players in line on the field with Champion Sports Referee Cards! Each set includes one red card, and one yellow card