Unique and Ultra-Thin Design: The wallet is made of high-quality aluminum alloy materials, is ultra-light and ultra-thin, looks stylish and cool, and can get rid of heavy wallets and go out easily. It can also be hung on a belt or bag. The carabiner reel on the top can be attached to an AirTag, keychain, or lanyard.Transparent ID Card Slot: On one side of the wallet, we designed an ID card holder slot that allows you to swipe the card without removing the card, making it more convenient to use. It can be used to install ID cards, work cards, access cards, traffic cards, etc. The C-shaped cutout makes it easier to slide the card out.RFID Blocking: The aluminum alloy case can protect your credit cards and bank cards from all RFID skimming devices, thus protecting your privacy and the security of your property. Maximum protection for your credit card, debit card, ID card, and driver's license.Expandable and easily accessible: The flexible elastic strap significantly increases card capacity and easily holds 15 credit cards. There's an aluminum alloy clip on the outside of the wallet. Simply fold your cash and slide it under the wallet. When you need cash, it's more convenient to take it out.