1. Highquality material Highperformance conductive fabric faraday fabric made of 20% copper/nickel 80% polyester. Signals with 8090dB average attenuation from low 10kHz up to 30GHz. Blocking 99% of radio frequencies, resistance below 0.05Ohm/sq. 2. High Electromagnetic Shielding Nickelcopper blend prevents most WiFi, cell signals, and radiation from passing through, EMF shielding fabric for blocking RF signals such as cell, GPS. Faraday fabric is effective in ing from harmful effects of radio waves, electromagnetic fields. 3. Avoid Information Leakage For use in wallets or handbags, faraday bags to protect your credit cards from data theft. Wrapping the phone tightly in multiple turns without small gaps is effective in shielding the signal (WiFi, bluetooth, GPS, RFID etc.). Friction resistance, good ductility. 4. Wide Application Used for electromagnetic high frequencies, such as industrial highfrequency lines, mobile communication, signal transmission stations, medical instruments and other industries. Faraday curtains, tents, routers, microwave ovens and many other unsuspecting devices and household appliances.