OffGrid by EDEC - Tablet Faraday Bag with Window - Signal Blocking, Anti-tracking, Anti-spying, EMP Protection for Tablets, Cell Phones, Key Fobs and Credit Cards

The Large Window Black Hole Faraday Bag allows for confirmation of signal cutoff via a transparent window that allows minor analysis of the contents in the bag, without compromising the security of the devices inside.
Black Hole Faraday Bags

Black Hole Faraday Bags by EDEC Digital Forensics are the only reliable shielding bag on the market. They are made in the USA, with high quality, industry-leading materials.

Black Hole Faraday Bags have been designed to aid law enforcement, military, and consultants in the collection, preservation, transport, and analysis of wireless evidence.  Wireless devices such as cell phones, GPS, netbooks, bluetooth devices, laptops, etc. are shielded from cellular, WiFi, bluetooth and radio signals when the bag is sealed.