materials and performance Fabric composition: 20% grade copper and nickel, 80% polyester Shielding range: 10 kHz to 30 GHz Blocks 99% of wireless frequencies Surface resistance: 0.03–0.05 ohm per square Shielding effectiveness: 80–90 dB Fabric sheet width: 43 inches Effective shielding performance Shields against electromagnetic field (EMF), electromagnetic interference (EMI) and radiofrequency (RF) signals Nickel and copper composition effectively blocks WiFi, Bluetooth, cellular signals, GPS and RFID Easy to use and Suitable for smartphones, laptops, routers, car keys, curtains, blankets, tents and cards Durable with conduction; easy to DIY For results, ensure the fabric completely wraps the item with no gaps or openings Household protection Protects against radiation from smart meters, laptops, TV screens, mobile phones, power outlets, routers, microwave ovens, nearby cell towers and other devices in or near the home Helps safeguard health and privacy Use scenarios Home network shielding: wrap routers, modems and other network gear with the fabric or install shielding curtains to reduce exposure and enhance privacy items and travel: create shielding pouches for car keys, wallets, cards and passports, or use the fabric to make portable covers for onthego protection Home comfort and camping: convert curtains or blankets into EMFshielding panels for bedrooms or tents to reduce exposure in sleeping areas