5Pack EveryOne-Buy RFID Passport ID Sleeve Protector Blocking Safety Aluminum Shield Anti Theft Quantity:5pack;Size: 10.5*13.5cm passport protector These passport sleeves are made to block incoming RFID signals. Secure sleeves create an RFID shield Material: Aluminum Foil;Protects your ID & personal info Protects from EMI (electro magnetic interference) Sleeves block high-tech hijacking scanning equipment waves