Pack of two Signal Blocking key pouches – any car key will fit in this RFID pouch. The dimensions are Length 13cm x Width 10cm and easily slots into pockets, handbags, rucksacks and briefcases. You can also keep all of your bank cards safe at the same time! RFID Lining – runs through the interior or our car key security pouches, this signal blocking material stop thieves being able to hijack your car’s unlocking signal with apps or devices from out side your home or near you when in public. Accredited Certification – at Periea we do things the right way! Our anti theft signal blocking cases are the only faraday pouches available on the UK market with full certification. This means that we have tested and had authenticated that they work by a qualified third party, unlike many inferior versions!