Skimming Prevention Card Case Measured: 8.7cm x 5.8cm (Length / Width) 【Material】Anti-magnetic card case Special aluminum foil laminate material on the inside Cuts over 99% of electromagnetic waves Physically completely blocks RFID skimming Simultaneously prevents demagnetization of magnetic cards Just put your cards in the anti-magnetic card case The gray skimming prevention cases on the market are about 3mm (approx. 6.3cm) wider and won't fit in a smartphone's card pocket. You need to cut the ends. This product is 5.8cm wide, a size smaller, no need to cut Anti-magnetic card case for credit cards, bank cards, etc. - Quantity: 3 pieces - Function: RFID protection - Design: Stylish purple color Can accommodate 4 or 5 cards. Please ask if you have any questions.