RFID card protector sleeves are designed to prevent identity theft and fraud by blocking attempts to scan or steal personal information from bank and credit cards, identification cards and any other cards that contain an RFID chip. These 6.2 cm x 9.2 cm (2.5” x 3.5”) RFID protector sleeves come in red and silver and provide a bilingual reminder to install CO alarms. Pkg. of 50 (25 of each colour)