30 Pack Anti Theft Credit Card Protector RFID Blocking Safety Sleeve Shield Features: Protect your information: The sleeves are made with advanced materials made to block and protect against RFID Technology.  The material serves as a powerful electromagnetically opaque shield, which blocks RFID signals from unauthorized scans. The sleeves protect credit cards, debit cards, ATM cards, driver's licenses, transit cards by shielding and blocking UHF 860~960MHz & HF 13.56MHz frequencies. Simple slim design: No cutting or modification required. It is slim enough to fit basic card slots in wallets, handbags, travel bags and smartphone cases. Water, tear resistant: Enduring resistant material to stand tears and punctures, suitable for daily use. They're even waterproof, so you don't have to worry about them. Easy to test: To check if the Sleeves are working, please just test it with your scanner, or at retail stores and try them out on the checkout scanner. Designed to protect credit cards, money cards, identification cards from electronic fraud or theft; It can help you defend yourself against electronic pickpocketing. PREMIUM MATERIAL: Made from special RFID blocking material, this credit cards holder and RFID blocking passport holder is thin, lightweight waterproof and tear-resistant; certified secure sleeves for credit cards protect against scanning of digital and electronic chips by thieves, tear- and water-resistant RFID sleeve with electronic armor is the identity theft protection for your bank cards; this credit card and ID holder prevents electronic access to your cards; valuable credit card protection, an ID card protector to block scanning and skimming Protect yourself from payment fraud and electronic pick-pocketing and other difficulties Size:9.1 x 6.2 CM Anti-static, anti-RF energy, lightweight and flexible.  Package Included: 30 x Sleeves(Random Colour)