Many new credit cards have Radio Frequency Identification chips inside which offer convenient contactless scanning and information sharing at the cost of security and privacy. This protector will block RFID signals and protect valuable information stored on RFID chips from unauthorized scans or unwanted readers. It allows you to hold two cards or IDs. The adhesive tape on the back allows you to apply the wallet on smartphones with a flat back. 2.5" W x 3.69" L. Imprint area is 1.50" H x 2.00" L on 1 color only horizontal imprint and includes a 1 Colour Imprint on 1 Location. Packaging: Bulk. Please call for rush delivery availability or multi-colour/multi-location imprints.