Eagle Creek RFID Blocker Sleeves help keep your personal information, personal. Keep credit cards and other personal identification cards in these sleeves to keep your information yours alone.Features: Anti-Theft: Lockable zippers and Passport-sized RFID Blocker Pocket (inside main compartment) helps block RFID Readers from stealing personal information up to a frequency range of 30MHz to 3 Ghz Tear and water-resistant Specially coated paper with unique conductive layer helps to protect personal information on credit cards up to a frequency range of 13.56 MHZ Shields enhanced driver's licenses (issued in WA, MI, NY, VT) select transit cards, and European sQuid cards 3 per pack Specs: Capacity: 1 Card 3-Pack Dimensions: 3.5" x 2.25" Weight: 0.065 oz (each) Material: Laminated RFID Blocking Aluminum