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.
The Only Bag Trusted by the U.S. Military, Law Enforcement, and Consumers

EDEC 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.

Features
Lightweight and durable for use in the field and the lab
Shields a wide range of wireless signals (GSM, CDMA, 3G) used in cell phones, PDA's, two-way radios, and blue tooth devices, laptops, tablets, and other electronics
    External dimensions: 21.25" tall x 14.5" wide
  Shielding Specifications: 900MHz: 79 dB 1.8 Ghz: 73 dB 2.1 GHz: 75 dB 2.4 GHz: 74 dB
    Compatible with EDEC Evidence Portal App for Android
Protective outter shell is water and wear resistant
 Made in the USA with the highest quality in the industry

Use CasesPersonal data security
Secure iPads, GPS units, multiple cell-phones and small netbooks from connecting with wireless networks
Protect devices from hacking, tracking, and skimming
Law Enforcement evidence collection and storage
Military: Evidence collection, suspicious device storage