Check the listing for details. 20Pcs RFID Blocking Sleeves Identity Theft Credit Card Protector Holders White. Condition: New. Listed at 9.80 USD. The RFID-blocking card sleeves are mainly for protecting cards from card twisting and magnetic field interference. Widely used on credit cards, ID cards, ATM cards, passports, driver Identification cards, and other RFID-enabled contactless Cards.Specification：Color: WhiteMaterial: Aluminum, PlasticSize: 92*62*0.3mm/3.62 x 2.44 x 0.012 inch (L x W x T)Packing List: 20Pcs x RFID Cards SleevesAdvantage:The product is made of aluminum material, good corrosion resistant, which can extend the useful life of the cards.Small size, can easily fit in your pocket.Instruction:It is easy to use. Just put your cards in the card sleeves and the card signal would be lost when you using it.NOTE: Please check the size of your card before purchasing.