EMF Protection: The EMF blocking sleeves provide advanced signal protection for your phone, effectively blocking signal intrusion and phone signal radiation Package Content: You will receive 2pcs signal blocking bag, size is about 4.7 inch/11.9cm wide and 7 inch/17.8cm long, making them suitable for most phone devices Material Information: Faraday Bags are made of oxford cloth, which is waterproof and not easy to tear, if the surface of the water or stains can be wiped directly with a damp paper towel, easy to maintain Convenient to Use: This shielding bag can be used to shield the signal, can also be used as a protective bag for cell phones and used to hold other things, easy to use Wide Application: Put the phone into the bag, not only can avoid cell phone electromagnetic radiation, but also can shield the cell phone signal, outsiders can not call through, to avoid the embarrassment of not answering the call 2Pcs EMF Blocking Shield Sleeves for Cell Phone 17.8x11.9cm/7x4.7 Inch Anti-EMP Signal Blocking Bags EMF Protection Phone Sleeve 3mm Thick EMF Blocking Phone Case for Cell Phone Privacy Security