SHIELDSAK Bags are part of LOKSAK's product offering. These bags are designed to protect the electronic data on your mobile devices, credit card chips, passports, and more. The SHIELDSAK is essentially a fabric faraday cage that blocks all types of RF, Infrared, and Skim/Quick Scan transmission. For items properly stored inside the bag that means your chips can't be scanned, your devices can't connect, your phone won't ring and you can't be tracked. A lot of us have to travel frequently for one reason and another, and these are a nice way to protect ourselves from the predators out there. You can find them here on our site: https://5col.com/products/shieldsak-rfid-blocking-bag Features: SHIELDSak secures vital information and prevents electronic tracking. SHIELDSAK will go through TSA security scans with absolutely no problems. Lightweight, fabric Faraday pouch blocks all signals capable of reading your personal information. Manufactured in the USA.