Specification:Material: TheAluminumHigh quality carbon fiber synthtic leatherSize: 9.6 cm / 3.54 in + 6 cm / 2.36 inNumber :C1804H1Feature: DIENQI RFID carbon fiber slim card holder men walletThis Is Not a Simple Metal Card WalletIt Also Has Anti-theft FunctionNote: to prevent theft refers to the credit card information being stolen.This Is Not a Simple Metal Card Wallet . t Also Has Anti-theft FunctionNote: to prevent theft refers to the credit card information being stolen.Some buyer (Especially Israeli buyers)said it can't close .Because they think the back as the front.Please use the correct way !