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

Aluminum foil anti-theft RFID blocking sleeves protect cards from unauthorized access. They are designed for everyday use.

• Product type: Antimagnetic RFID Package
• Compatibility: Various cards
• Material: Aluminum foil
• Key feature: Prevents unauthorized access
• Color/Variant: Silver
• Intended use: Everyday use
• Prevents strong static interference
• Prevents strong electromagnetic field damage
• Prevents malicious theft of personal information
• Extends the effective life of smart cards
• Compatible with bank cards, shopping cards, bus cards, etc.