1.Our faraday fabric features a conductive grid design akin to a faraday cage. This unique blend of polyester, copper, and nickel creates a powerful shield against electromagnetic interference. Effective shielding of electromagnetic radiation, the shielding value reaches 99.99%. Surface resistance below 0.05Ohm/sq, average attenuation of 80 90dB from 10KHz to 30Ghz. 2.99.99% Upgrade ProtectiveFaraday fabric is made of polyester, copper and nickel, highly electrically conductive, RF/EMI/EMF/IF blocking. Fabric has undergone a major upgrade by adding a double layer copper layer and reducing the polyester fiber, thereby obtaining stronger protection, up to 99.99% protection. It can effectively block WIFI, bluetooth, GPS and RFID. 3.Shielding FunctionEMF blocking fabric can be used to create shielding for various items. It can be used for smartphones, laptops, car keys, or cards. The wrinkle material is easy to cut and sew for creating coverings or mesh barriers according to shielding needs. The fabric is also used in retail to line bags and purses to prevent skimming. 4.Extensive CoverageFabric excellent protection against electromagnetic radiation from various sources, including transmission towers, communication base stations, wimax base stations, WIFI base stations, and wireless transmitting devices. Trusted by law enforcement and the military, it blocks electronic signals and defends against emps, and is ideal for signal proof rooms or tents.