Faraday Bags

A Faraday bag is a pouch or bag lined with conductive shielding material that blocks radio signals from reaching the devices inside. It works on the same principle as a Faraday cage. Once a phone, key fob or laptop is sealed in, it can't send or receive cell, GPS, Wi-Fi, Bluetooth or RFID signals. The Faraday bags in this collection also help shield stored electronics from the electromagnetic pulse of an EMP event.

Yes. A sealed Faraday bag helps protect the electronics inside from the electromagnetic energy of an EMP, as long as the device is fully enclosed and the opening is closed. Faraday Defense designs its NEST-Z EMP Kits for EMP, HEMP and CME events, with two aluminum shield layers and heat-sealable openings. A bag only protects what is stored inside it, so it suits spare radios, phones, flash drives and chargers, not equipment wired into your home.

The Faraday bags here block cellular signals including 5G, plus GPS, Wi-Fi, Bluetooth and RFID. The Cordura Jacket Bag and Cordura Utility Bag are rated at more than 85 dB of attenuation from 400 MHz to 40 GHz, and the NX3 bags at 85 to 90 dB. In practical terms, a sealed phone can't be reached over a network or tracked by its location, and a key fob or contactless card can't be read.

Seal your phone inside the bag and call it from another phone. If the call goes straight to voicemail, the bag is blocking the signal. You can also seal a keyless entry fob inside and try to unlock your car. If a call gets through or the car unlocks, check that the closure is fully folded or sealed, since even a small gap can let signals in, then test again.

Choose a bag that fits your largest device with room to close the opening completely. For a phone, the 4.5 x 8 inch Cordura Jacket cell phone bag fits all major makes and models. Tablets fit the 7.5 x 10 or 9 x 12 inch Jacket bags, and the 14 x 16 inch laptop bag holds laptops and HAM radios. The large Cordura Utility Bag takes laptops up to 17 inches, drones and camera gear.

NX3 kits are fabric bags with a Velcro closure you can open and reseal every day, and NEST-Z kits are heat-sealable bags for storage. NX3 bags use three layers of CYBER fabric plated with nickel and copper, rated at 85 to 90 dB, and close with a double-fold Velcro seal. NEST-Z bags have five layers, including two aluminum shield layers and two static-dissipating polyester layers, are rated above 50 dB, and can be heat sealed to store spare electronics.

Berry Compliant means the bag is made in the USA from U.S.-sourced materials, which meets the Department of Defense's Berry Amendment requirements. Both Cordura bags in this collection, the Berry Compliant Jacket Bag and the Cordura Utility Bag, carry this designation. It matters to government agencies, law enforcement and military buyers who must purchase Berry Compliant gear, and to anyone who wants a Faraday bag made from American materials.

No. A device sealed in a Faraday bag can't connect to any network, and running a charging cable through the opening breaks the seal and lets signals in. Charge phones, radios and power banks before you store them, then check and top them up on a regular schedule. Phones drain their batteries faster while searching for a signal, so turn devices off before you seal them in.

Yes. Storing a keyless entry fob in a Faraday bag blocks the signal that relay thieves try to capture and boost to unlock and start a car. The Cordura Jacket cell phone bag and the smaller NX3 and NEST-Z bags fit key fobs, and the small Cordura Utility Bag holds fobs alongside phones and cards. Keep the bag fully sealed, and test it by trying to unlock your car with the fob inside.