Freedi 10Pcs Credit ID Card Secure Protector Sleeve Holder Plastic Soft Credit Card ID Secure Protector Aluminum ferrules can avoid bank card, ID card, social security card and other magnetic disappear or information leakage. The sleeve is slim enough that you can put your shielded card back in your wallet where you normally keep it. Prevents electronic pick-pocketing and waterproof Protect yourself from payment fraud and other difficulties.