MATERIAL: The wallet is made of aluminum alloy metal texture, built-in automatic card pop-up metal box, internal steel for your card to provide ultimate protection and privacy (RFID blocking). PRIVACY AND SECURITY: RFID Blocking Pop-up Credit Card Holder Wallet is perfect for blocking unnecessary RFID scanners, including RFID blocking technology to prevent unauthorized access to personal information and protect your RFID credit, debit and ID cards from electronic plagiarism. Very secure and perfect for travel RFID credit card holders. DESIGN: Unlike other wallets, this wallet has a convenient pop-up function where all the cards slide out, allowing you to easily find the card you are looking for. This is the perfect smart wallet. APPEARANCE: The stylish and thin design makes the wallet look more elegant and retro. It's small and portable and can hold everything you need! It makes life easier. PRACTICAL WALLET: Suitable for daily use, travel, shopping, high quality, reasonable price, is also a good gift for friends and relatives.