Description: brand new and high quality Specifications: Material: Aluminum Foil + Plastic Color: Black,Red,White,Silver Size:app. 9.2x6.2cm/3.62x2.44'' Function: Anti-demagnetization Each card cover can hold one card. Features: Suitable: for many cards, such as, credit cards, debit cards, for subway cards, etc. RFID Security card can help users prevents strangers reading your IC banking card, ID card and transit card and RFID for 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'for t get the card information, effectively guarantee the information security. Quantity: 1set(10pcs) Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1set(10pcs) x RFID Blocking Credit Card Sleeve(other accessories demo in the picture is not included.)