Feature: 100% brand new and high quality Suitable: for many cards, such as, credit cards, debit cards, subway cards, etc. RFID Security card can help users prevents strangers reading your IC banking card, ID card and transit card and RFID smart cards, the complete elimination of payment card wallet of NFC applications, such as bank cards, bus cards were fraudulent, risks such as leakage of personal information. Card sets with conductor layers in the body, so when you put the card into the holding Chamber, outer conductor can isolate the bank card to make NFC devices even closer to contactless RFID cards, card in protective sleeve, you can't get the card information, effectively guarantee the information security. Material:Aluminum Foil + Plastic Color:as pics Size:approx:9*6cm Function: Anti-demagnetization Each card cover can hold one card. package include:10pcs Note: 1 inch=2.5cm Sells the commodity take the material object as the standard 1.Due to the hand measurement, there have size error about 1-2cm 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the photo and the actual item could be slightly different