Material: stainless steel. The wallet is made of high quality aluminum and high quality stainless steel, which makes it more durable than plastic. Information Security: Prevents wireless identity theft Protect your cards RFID-enabled against possible wireless identity theft. RFID card holder for identity protection prevents scanners from picking up confidential private information. Design: card holder and mini wallet. Small enough to fit in the front jeans pocket and slim enough to fit comfortably in the back pocket. Large Storage Space: The accordion card holder with 8 high quality PVC slots is large enough for easily inserting and removing cards. Can be used on ID cards, credit cards, driver's license, health cards, etc. Easy to use: simple opening at the push of a button. Convenient and quick access to bank cards, credit cards or banknotes you can easily take out by opening the box.