1.Military Shielding MaterialFaraday fabric is crafted from 20% top quality copper nickel polyester, this exceptional composition provides excellent conductivity, shielding effectiveness, and thermal conductivity. The faraday cloth excels at effectively blocking a wide range of signals, boasting an impressive 99.99% blocking capability in the frequency range from 10khz to 30ghz. 2.Impressive Shielding EfficiencyFaraday fabric is made of metallic copper, metallic nickel composition that blocking efficiency 99.99% of wireless frequencies such as electromagnetic field and electromagnetic interference (EMI). Experience militarygrade EMP protection with our faraday cloth, block signals from WIFI routers, mobile phones, bluetooth, GPS, RFID and more. 3.Large Size for CraftingCopper nickel faraday fabric is easy to cut and sew, usage for bags, car keys and router bag, curtains, tents, etc. Effective shielding for celltowers, microwave signals, phones, smart meters, security systems, radar, military broadcast, etc and more. as an insert in the wallet or handbag to protect your credit cards from data theft. 4.Satisfactory Practicality on Various OccasionsAs disruptive signals can come from inside or outside the home, more and more homes are using these faraday fabric to create enclosures against exposure to unwanted signals. This versatile fabric is perfect for crafting signalshielded rooms, wall coverings, tower emf shields, communication base stations, and wireless transmitting devices.