**Referee Cards - Red and Yellow - Durable and Visible - Ideal for Soccer and Other Sports** Do you want to officiate games like a pro? Do you need a set of referee cards that are easy to use and show? If so, you need the Referee Cards by SportMaster. The Referee Cards are a must-have accessory for any referee or coach. The cards are made of sturdy and waterproof plastic that can withstand any weather and impact. The cards are also bright and vivid, making them easy to see and display. The cards come in two colors, red and yellow, to indicate different types of fouls and penalties. The Referee Cards are perfect for any sport that requires a referee, such as soccer, football, rugby, hockey, and more. You can use them to enforce the rules, maintain order, and show authority. The cards are also easy to carry and store, as they come with a metal case and a lanyard.