Package &Size--You will receive 10Sets referee warning cards, a red and a yellow eachSet, 20pcs in total.Size 3.15Inch/80mm wide, 4.33Inch/110mm long, 0.02Inch/0.5mm thick. the large quantity is enough your use and replace needs. Premium Material--The referee red and yellow cards are made of high quality PVC plastic material, light weight, sturdy and durable, not easy to break, can be used for a long-term. Eye-CatchingColor--The red and yellowColor of the football referee cards are very clear and eye-catching, easy to identify, the red card orders the player to leave the field, and the yellow card is used as a warning. Easy to Carry--Referee cards are designed in a lightweightSize to be easy to carry and store, you can carry these referee cards in your bag, easy to run, saving your strength and endurance. Wide Application--These referee card are suitable for a variety of sports activities or sports events, like football matches, hockey training, competitive games, entertainment and other occasions.