The larger/back pocket is for signal blocking, best for storing car key fobs. The Car Key Protection Shield Pouch is made by RFID Material, it provides the perfect RF signal shielding for the car keys, especially a must-have for keyless-go car keys.
Faraday Box for Car Keys with 2 Pack Faraday Bag for Key Fob, PU
2 x Car Key Signal Blocker Case Faraday Cage Fob Pouch Keyless
MONOJOY Faraday Key Fob Protector Signal Blocking Pouch Bag
RFID Blocking Faraday Car Key Pouch - 2 PACK
Defender Signal Blocker Mini
2-Pack Car Key RFID Signal Blocker Faraday Pouches(ACSGBLOCKER01
2 x Car Key Signal Blocker Case Faraday Cage Pouch – Lsm-Car-Sales
2 Pack Car Key Signal Blocking Pouch, Mini Faraday Pouches for Car
MONOJOY Faraday Key Fob Protector Signal Blocking Pouch Bag
Carbon Fibre Car Key Signal Blocking Pouches (2 Pack) – POWR