Review on ClearBags Electronic Reclosable Translucent SSZ68 by Drew Gengler

These are bags. They are crisp and have reasonable build quality for the price. They do NOT have a zipper as advertised, but do have an adhesive strip. They definitely do NOT block normal EMF. Even weak signals pass through the bag as if it never existed. I've tried double packing, folding and rotating to increase the number of layers but to no avail. Thus, RFID signals should have no trouble passing packets. The claim that they shield Faraday is a scam. To be fair, maybe they can attenuate some frequencies, but the Faraday Defense claim implies almost complete spectrum coverage. Because they don't list the frequencies they claim protection against, their EMI protection claims are utterly useless. It's possible that they are (I haven't tested) safe against Electrostatic Discharge (ESD), but that's a completely different claim than EMF. At this point I seriously doubt even the ESD claim.