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

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

• Product type: Antimagnetic RFID Package
• Compatibility: smart cards
• Material: aluminum foil
• Key feature: helps protect personal information
• Color/Variant: silver
• Intended use: everyday use
• Category: Apparels & Bags
• Prevents strong static interference
• Prevents strong electromagnetic field damage
• Prevents unauthorized access to personal information
• Extends the effective life of smart cards
• Compatible with various bank cards, shopping cards, bus cards, etc.