Color:Black High Quality: Our faraday bags for phones is made of premium silicone-coated fiberglass and ultra-strong shielding fabric, making it fireproof, waterproof, and able to withstand temperatures up to 2000℉. In other words, it effectively blocks signals even in extreme environments. Signal Jammer Blocker: Our faraday bags uses premium double-layer shielding fabric to effectively protect your Faraday cage. It blocks all types of signals: WiFi, Bluetooth, RFID, GPS, cell phone signal jammers (including 5G networks), AirTag, car remote control signals, SMS, NFC, and radio signals. Portable and Foldable: The faraday pouch is lightweight and portable, easily foldable without deformation or damage. Our Faraday cage features a double-roll design and Velcro closure, making it more robust and durable, so you don't have to worry about valuables falling out. Versatile Use: This faraday bag can prevent thieves from intercepting and relaying signals from your keys, thus preventing burglaries and keyless entry. It can also be used for radiation protection for pregnant women, storing bank cards, ID cards, etc. Friendly reminder: If you encounter any dissatisfaction while using faraday box, please feel free to contact us. We will do our best to resolve your issue. Thank you for your support!