SIGNAL BLOCKING THAT WORKS (TM)The GoDark Faraday Bag, an industrial strength Faraday bag from Tarriss, protects your cell phone or tablet from location tracking, hacking, and damage due to external EMF by blocking all outgoing and incoming EMF signals between 600 MHz and 5 GHz, including GPS, Cell Phone, Wi-Fi and Bluetooth. Made to be used, not just talked about, GoDark Faraday Bags were made from the ground up with exceptional signal blocking, superior durability and uncompromising construction quality. GoDark Bags were built for the elements and have been thoroughly tested by a third party lab to ensure they perform as expected, making them the trusted choice among IT security professionals, law enforcement, and elite military units across the world.A VERY DURABLE 600D Poly Outer Shell with a PU face coat and a TPU backing that is both water and puncture resistant ensures signal blocking does not become compromised with regular wear and tear. Ideal for indoor and outdoor use. SAFETY FIRST - Inner felt liner protects your device and prevents accidental screen activation allowing you to leave the device on while it's in the bag ensuring quick access to your powered-up phone in an emergency.LIGHTWEIGHT - At under 3oz, the GoDark Faraday Bag for phones is lightweight, portable and easily fits into your life wherever life takes you.GUARANTEED FOR LIFE - We believe in our products and stand by the quality and performance of our premium GoDark Faraday bags with a lifetime guarantee.BLOCKS: EMF Frequencies between 600MHz - 5 GHZCellular signals: CDMA, GSM, DCS, 3G, 4G, LTEWifi (2.4 - 5 Ghz),Bluetooth (2.4 Ghz) and GPS (1-2 Ghz)