SpecificationColor: Circle-12 PcsMaterial: Paper Aluminum Foil Size: 8.7 * 5.8 cm (card sleeve) Printing: four-color printing Thickness:0.30 mmQuantity: 12 PCS FeaturesAdvanced RFID secure sleeve designed to protect credit cards, money cards, identification cards from electronic fraud or theft;Designed to defend against RFID signals 13.56 MHz; RFID shields are a superb debit card protector to provide superior travel security. Made from high grade ultra-lightweight durable material, water & tear resistant. Slim profile design fits easily into your wallet or purse without taking up extra space.Engineered to allow you to freely slip your card in and out of the sleeve with ease. Snug fit with no modifications required. Perfect for traveling & everyday use.RFID sleeve with electronic armor is the identity theft protection for your bank cards; the credit card and ID holder prevents electronic access to your cards; valuable credit card protection, the ID card protector to block scanning and skimming.