100pcs Aluminum Foil Anti Theft RFID Blocking Sleeve Card Protector, Size: 9.1*6.3cm

Aluminum foil RFID blocking sleeves protect smart cards from information theft. They are designed for everyday use.

• Product type: Antimagnetic RFID Package
• Compatibility: Smart Cards
• Material: Aluminum Foil
• Prevents information theft
• Prevents strong static interference
• Prevents strong electromagnetic field damage
• Prevents malicious stealing of personal information
• Extends the effective life of smart cards
• Compatible with various bank cards, shopping cards, bus cards, etc.