1.Surface Resistance Surface Electric Resistanc below10??/cm, Shielding Performance range from 55 to 70dB, strong conductivity and shielding effect, the shielding value reaches 99.9999 (%). 2.Superior Shielding Performance The Faraday Fabric is a powerful conducting material that can be used for shielding against electromagnetic field (EMF), electromagnetic interference (EMI) and radiofrequency (RF) signals. Its composition effectively blocks WiFi, Bluetooth, cell signals, GPS and RFID. 3.Elastic Material Silver coated Nylon Fabric with Vacuum Sputtering. Highly Electrically Conductive Silver/Nylon Fabric Very Soft and Flexible.Perfect for shielding windows and walls, great for lining hats and clothing or draped over the bed. 4.Size:39'x59' Inch (100x150 cm). Each Piece Is 150 cm Wide Sold by 100 cm Long.