Meet the OffGrid Switch Faraday Wallet: a secure wallet that doubles as a faraday cage for your phone to block Bluetooth, GPS, WiFi, and cell signals. It has a low profile with room for your cash, cards, and ID. It has metal lined panels for RFID protection.
This faraday wallet is made of weather resistant polyester. It has hidden card slots inside the cash pocket. When you need RF shielding for your phone, you simply have to flip this wallet open and insert your phone.[where to get it]