Tech Protect Faraday/EMP Bag Size Small 8" x 8"

Put my cell phone in the bag and tried calling it from another phone; the bag did block the signal, so I'd guess that it works.Personally I just bought the smallest size to put an external hard drive that I back up important files on in case of an solar flare or EMP.I'll be honest and say that I have no idea if this bag would hold up against either of those events, but its better than nothing at all I would guess.

Product arrived before I expected it to and has far exceeded my expectations

Absolutely useless as a Faraday cage. I put my key fob in it, sealed it, and my car still let me in. I don't understand what they say about attenuation. For the right frequency range, a Faraday cages *BLOCKS* completely - it doesn't just attenuate. So it is either a Faraday cage or it isn't. And in this case, it isn't.The bag label cites a us military specification, but a google search shows that to be for anti-static bags, not Faraday cages.

strong bag

WORKS.Not sure what these 1* reviews are or where they come from but I can says this:1) I have no financial gain for puttingbthst review up.2) I have been using the Tech Protect (and othe brands) bags for almost 15 years and Tech Protect has been the most effective and lasting product BY FAR.I was skeptical because of the zip-lock like closure that seemed too easy to be true but it actually works great. A simple test will tell you what works and what doesnt:- Put your cellphone inside the bag.- Close the bag.- Call your cell phone from another line. - If your phone rings-> it’s not EMP protected. - If your phone doesn’t ring it's protected.The pictures below show how I keep a whole load of electronic in one giant bag in a safe. I don’t even have to zip close the bag. If I just roll the end of the bag and close the safe nothing will ring. NOTE : without the bag, the phone just in the safe, the phone will ring.You can repeat that test with small bags with small electronic like celle phones, Ham Radio, etc out about the house (NOT in the safe) and you’ll see that nothing rings or respond.I even keep a small 800W generator in a bag. Had for over 10 years. The generator looks like new and still start on 3 pulls.

Description misleading. Leads you to believe there are multiple bags included. First line in description says "All sizes include: 8"x8" - 8"x16" - 16"x18" - 20"x30" and 32"x38". No where in description does it state there is only 1 bag being sold. There is ONE and only ONE bag included. The little one. Price is outrageous for 1 bag, and shipping doubles it. Don't buy this unless you want 1 and only 1 very expensive 8x8 bag.

I think I just wasted my money. I put my keys in one of the bags and I could still open my door. It didn't stop anything from happening. I don't know if it actually protects my keys from someone else picking up the tone but I can still hear the tone even in a closed bag.