GoDark Faraday MAS Utility Bag Large Black. Ideal for protecting your privacy from location tracking and your electronic equipment from damage due to solar flare electrostatic discharge or even an electromagnetic pulse (EMP) by blocking incoming and outgoing EMF signals from your cell phones tablets and other mobile devices between 200 MHz and 40 GHz including GPS Cell Phone (4G/5G) Wi-Fi and Bluetooth. This GoDark Bag is made with 3 layers of GoDark RF shielding fabric which has been independently lab tested to exceed 100 dB of EMF signal attenuation and has passed the MIL-STD-188-125-2 standardized military test for High Altitude EMP shielding. Part of the GoDark MOLLE Attachment System (MAS) series of Faraday bags which have MOLLE straps on the back for easy attachment to other bags or equipment. GoDark Bags are the trusted choice among law enforcement including the FBI US Military preppers security professionals and the privacy conscious across the world. Specifications for GoDark Faraday MAS Large Utility Bag: Manufacturer: GoDark Color: Black Width: 8.25 in Height: 11 in Size: Large Features of GoDark Faraday MAS Large Utility Bag 3 layers of shielding MOLLE Attachment System Inner liner to protect shielding Package Contents: GoDark Faraday MAS Large Utility Bag Shoulder Strap GoDark MASL01: Faraday MAS Utility Bag Large Black