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.
2 Pack Car Key Signal Blocker Pouch Bag Faraday Fob Protector Case
Car Key Signal Blocking Pouch
LNGOOR 2Pcs Faraday Bag for Phones,2 Pack Blocking Bag Faraday
RFID Blockers & Faraday Pouches
Car Key Signal Blocker Pouch Case [ 2 PACK ] Mini Faraday Bag for
2 Pack Car Key Signal Blocking Pouch, Mini Faraday Pouches for Car
Faraday Pouch - Pilot FOB Signal Blocker
Car Key Signal Blocker Case Faraday Cage Fob Pouch Keyless RFID Blocki
Faraday Bag for Key Fob (2 Pack), TICONN Faraday Cage Protector
Men Bag by Leather keychain, Car key fob, Zipper bags
Defender Signal Blocker Mini