Tech Protect Faraday/EMP Bag Size Large 16" x 18" This offer is for 1 EMP Bag. All other bag sizes available: 8"x8" - 8"x16" - 16"x18" - 20"x30" and 32"x38" and meet US Military Specification MIL-B-81705-Rev-C &lt;40 db. Designed for placing one bag inside the other (nesting) for ultimate protection of almost 90 decibels. Custom bags can also be made by contacting us. By nesting Tech Protect EMP/Faraday bags your electronics will have almost 90 Db of protection from EMPs, HEMPs, Super EMPs, Solar Flares and dangerous electrical surges. These bags are designed to stop EMPs not cell phone signals. To stop cell phone signals one bag must be placed inside another. Waterproof/Water Tight, Zip Lock Top, 735lb. Tensile Strength, 38lb. Puncture Strength, Insulated coating on the inside, Conductive layer on the outside. Most affordable EMP/Faraday bags with high quality standard on the market. Protect your GPS, Hand-held Radios, LED Flashlights, DVD/Blu-ray Player, Red Dot/Battery Lit Optics, Night Vision, Infrared Optics, Chain Saw with Electronic Ignition, Hard Drives, Battery Chargers, Key Fobs (Car & Home), Generators, USB Drives, Cords with large Power adapters, Phones, Tablet, Computer, TV, and much more.