Surface Resistance: Below 0.03 ohm , Average Attenuation of 85 dB from 30MHz-18GHz.Material: copper+polyester , plain type , golden color, This Creates a Conductive Grid That Corresponds to the Idea of a Faraday Cage.Highly Electrically Conductive , RF/EMI/EMF/LF Blocking ,Super Earthing/Grounding Fabric/Anti-electrostatic/ESD /Radiation/Radiowave/Microwave Shielding Electromagnetic Fabric.Very easy to cut and sew .Usage for Bags, Curtains,Tents,etc.Effective Shielding for CellTowers,Microwave Signals,Phones,Smart Meters,Security Systems, Radar, Military Broadcast, etc and More. Making Anti-static Cloth, Wireless Meter Shielding, E-textiles, Shielding Curtain, EMP and EMI Radiation Reduction. High-shielding Conductive Fabric for Blocking RF Signals Such as Cell, Bluetooth, WiFi, GPS. As an Insert in the Wallet or Handbag to Protect Your Credit Cards from Data Theft.", Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.