Mission Darkness Faraday Bag for Keyfobs (2-Pack) // RF Shielding Protective Case for Smart Always On Keys Fobs Transmitters Small Electronics Vehicle Security Anti-Hacking Block Signal Relay

It works flawlessly. I placed a transmitter with an output amplitude of -25 dB inside, and its signal was completely suppressed—reduced to zero. Literally no signal escaped to the outside. It blocks virtually all radio frequencies. A phone placed inside instantly loses its connection and becomes unreachable. It isn't cheap, but it is well worth the money. It is made from high-quality materials.

works awesome belt strap makes it even better

Fits my keys perfectly, even with all the extra stuff I have on them, and blocks the signal entirely!!

This is a good product. Well made and works exactly as advertised. Price is also quite reasonable. Why 4 instead of 5 stars? Mostly due to preference that even though it has a belt loop on the back, it would have been nice for the mfg to have stitched on some sort of loop so I could clip it onto my caribiner or keyring with other keys. Would buy again, and I do recommend - but that facet just seemed a little short sighted is all.

The Faraday Bag for Keyfobs is not what I expected at all. I was just looking for a shielding bag, but what I got was much more than that! At first, I felt that the Faraday bag was going to be of poor quality due to the way it was packaged. However, after feeling the texture of the bag and putting it to the test, I was very pleased to see that I got a good quality item for the price I paid. When I put my keyfob in the bag and pressed the button to open my car, it would not. It simply lost all connectivity to the car as if the keyfob stopped working. When I took it out of the bag, the keyfob was working just fine. This is an amazing product because it does exactly what it tells you it's going to do. The material is also fantastic because when I poured water on the bag, the items inside were dry and protected. It may look like a simple bag, but it is definitely much more than just simple. It is well worth the price paid for and have already recommended the product to a few friends in need of the shielding bag.

Buyer Beware I bought a Mission Darkness cloth signal blocking Faraday Bag for my keyfob from Amazon, along with other products from their company & received this product on 10/31/25. The cloth signal blocking envelope only worked for 2 months, 19 days & now it won't block the signal, no matter how exactly I close it. I even put my keyfob in a plastic bag each time, before I put it in the Mission Darkness envelope to avoid any wear on the fabric. I was very careful to take care of the envelope. I am very disappointed in the quality of this product and how it stopped working after only 2 months, 19 days, which is unacceptable. I sent feedback to the Mission Darkness people and I hope they respond. I think they should replace the product as it did not last. This product doesn't appear to block the signal for very long or hold up to even the most careful use of it. If they correct this issue and the new product works for longer, I will update my review. Update: The vendor never got back to me or replaced the product despite me contacting them.

Works great if your key is in the bag you can’t open your door or start your car it’s amazing I got one for each vehicle so when I get out of the car I lock it up and put my key in the bag and then in my pocket I also keep them in a bag at the house perfect size for carrying it in my pocket the price is great and the protection of my keys is great Thank You

These work so well. I use one for my car key and use the other for credit cards when I travel. I have tested the signal blocking by attempting to unlock my car while my fob is in the bag, and it is a no-go. Even when I am next to the car, my car is unable to sense the presence of the key, which is exactly what I am looking for. These are small enough to easily fit in my handbook, but large enough to hold all of my cards and keys. I highly recommend - especially for travel, visiting theme parks, fairs, or any other place where your information might get scanned!