Package Contents: Contains 10 black RFID blocking sleeves. These simple and elegant sleeves are perfect for business professionals and those who value understated style. They coordinate with any wallet or apparel to enhance your professionalism Premium Materials: These bank card protectors combine tear-resistant and waterproof materials with a hard aluminum foil coating, making them lightweight yet durable. They withstand daily wear and tear, as well as harsh environments. They are also waterproof for extended protection Compact Design: Measuring a compact 5.8cm x 8.8cm, these RFID blocking sleeves securely hold cards and IDs, easily fitting into a standard wallet or handbag without adding bulk, ensuring a slim and portable fit. Whether you're using them daily, shopping, or traveling, they keep your data secure RFID/NFC Blocking Technology: The card protector is made of high-quality, advanced RFID-blocking material (including an aluminum foil coating) to effectively block electronic scanning, preventing the unauthorized theft of sensitive information and amounts on bank cards, credit cards, ID cards, and other cards Applicable: The bank card protector sleeves are suitable for bank cards, credit cards, ID cards, membership cards, passports, and other magnetic cards, providing a one-stop solution for protecting the information security of multiple cards. No need for dedicated RFID-blocking wallets, offering greater flexibility