This item is a referee kit, made of PVC and PU material. Red and yellow cards are placed on the outside of the clip for easy and quick extraction. Internal paper can be changed, can adapt to all kinds of games. It can be your . Features -Color:Assorted Color -Material:PVC and PU -Size:17.00X12.00X0.10cm/6.68X4.72X0.04in -Manufactured with PVC and PU material, safe, durable and wear-resistant. You can use it wherever you need to quickly get the attention of others. -A must for volleyball, football and soccer referees, very practical and necessary. -Special wallet design allows referees to take out cards easily and fast, very convenient. -Red and yellow cards are placed on the outside of the clip for easy and quick extraction. -For school sports practice, basketball, soccer, soccer and other sports, for referees, or anyone who needs a safety post Package list: 4 × sets of football referee kit