1、Shielding Phone Signals: Shielding case blocking bag acts as a shield, protecting your phone from theft, radiation, harassment, tracking, and leakage of individual information. 2、Radiation Protection: Place the product in the external bag to reduce radiation exposure while still allowing normal signal reception. Place it in the internal bag for complete signal blocking and incoming call prevention. 3、Anti Radiation Phone Case: With the prevalence of electronic devices and signal radiation in daily life, placing your device in the internal bag effectively reduces radiation and protects the health of pregnant women and unborn babies. 4、Anti GPS Tracking: Anti theft case bag is blocking phone signals helps prevent GPS tracking and locating, ensuring your privacy and security. 5、Oxford Cloth Construction: The inner layer of signal blocking pouch features a silver gray metal shielding fiber, and the bag is stitched with precise and sturdy thread, providing a durable and reliable barrier. Item Type: Faraday Bag Material: Oxford cloth Size: Approx.20 x 10cm / 7.9 x 3.9in 2 x Faraday Bags