100% brand new and high quality Features: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.Tips:Each card can hold one card. Specification:Name:Anti-demagnetizing card sleeveModel Number: RF-Shielded Material: PET,Aluminum foil, PEFunction: Anti-demagnetizationColor: Gold 01,Gold 02,Silver,RedSize:app. 6.3 x 9.1cm / 2.48 x 3.58inQuantity: 1set(10pcs) Note:Transition: 1cm=10mm=0.39inchNo retail package.. allow 1-2cm error due to manual measurement.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1set(10pcs) x Card Holder(other accessories demo in the picture is not included.)