Mission Darkness Non-Window Faraday Bag for Phones (4-Pack) // Signal Blocking Bag Prevents Hacking Tracking Spying, Device Shielding for Law Enforcement Military Digital Forensics, EMP CME Protection

They work.

Great item would buy again!!!!!

Blocked signal. Total silence. Put my Ham radio in one. I want to explore other possibilities for uses

excelente para privacidad en reuniones el mejor de todos

Very well constructed. Nice bags.

Funciona bien para bloqueo de señales lo uso poco pero a funcionado muy bien

It blocks basic signals. It doesn’t block the mic. Works as well as any other faraday bag.

Does properly block Wi-Fi, but you can talk on the phone perfectly with it in this bag and hooked to your vehicle So it does not block the cell service