(40) Faraday Cage EMP/ESD Bags Complete 40pc X-Large Kit Yellow Shield - Survivalists/Preppers ESD/EMP Bags with Heavy Duty Ziplok, Packaged Flat and Unfolded! Complete Kit will take care of everything from the charger/cellphone to the Laptop 4-layer protection, Metal in / Metal out, Great for multi-layer nesting. Includes 12x18(8pc), 10x12(8pc), 8x10(8pc), 5x7(16pc) - Sizes listed are interior sizes Military Specced - Listed below in Description