1. Shielding MaterialThe emf faraday cloth is made from 20% copper nickle 80% polyester excels at effectively blocking a wide range of signals, which has better shielding function and good conductivity, shielding efficiency reaches 80 90dB, shielding rating from 10khz to 30ghz, blocking 99.99% of wireless frequencies. The number of anti friction can reach 5,000,000 times. 2. Ideal Blocking EfficiencyThe faraday blanket can reduce the radiation that you from household appliances, such as refrigerator, TV, computer, and many others. High shielding conductive fabric can effectively block wi fi, cell phone signals, GPS and RFID, protecting our and privacy. Wireless shield against EMI, EMP, guarding business confidentiality. 3. Suitable for DIYFaraday fabric is moderately soft, providing a comfortable touch while being easy to sew and cut, making it suitable for use as lining. Simply cut and sew to easily create various enclosures, covers, inner bags, etc. For example, you can create faraday cage, faraday wallet, faraday blanket and covers for phone, laptop, car keys and router. 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, defends against emps, and is suitable for signal proof rooms or tents.