Faraday Fabric Military Grade Fabric 98×43 inch Nickel Copper Faraday Cloth for WiFi, GPS

I have been through hell with a local tower situation. Our whole area has. One thing I have wanted was a way to tent myself out once in a while to feel better from the signals. This fabric is one good way.FABRIC COMESThis looks like it is cut from a HUGE roll of fabric. That means you might get one with the sides bound nicely and only the ends ravel. Unfortunately, you might also get one with the sides that ravel.RAVELINGThis stuff ravels terribly. That means that you have to take care to finish the seams off perfectly. Be alerted though that this is metal so will wear down blades of a serger or a needle quickly. Also you will get a lot of tiny particles of metal threads in the air, so protect your eyes and vacuum it up right away after sewing.DOES IT WORK?This stuff WORKS. I know. I sat under it on a rough day. I could not believe the difference. I have put two pieces of this together and made it cover a queen sized bed. I put faraday tape on the center seam. I can honestly say that my body begins to relax when under this entire piece of fabric.Yeah, I tried it with devices and all of that, but honestly, I wanted it for ME. I have a 2nd piece which I sewed together and I use it for a bed cover so I can have relief sometimes. I can not use my phone or tablet underneath this either.It does work better if you gather it so I plan to gather it down on the sides and use a backing fabric to hold it in place. If you are doing to sew two pieces together, I recommend you tape the sewn area with faraday tape made for this stuff to be sure to seal all breaks in the fabric.As just the fabric with no backing, I can see through it to watch TV if desperate. LOLTHE BOTTOM LINEThis stuff not only blocks devices (best used in two layers or gathered) but it also provides relief for me.MY RATINGFIVE STARS. This ravels so badly you have to sew it really soon to finish the edges or you will have metal threads all over the place and they are annoying. If you are going to surge this, pay attention to my cautions in this review. It is important to do so.

Excellent fabric for protection from temp or solar flares.

This faraday fabric was a bit hard to work with but a walking foot on the sewing maching solves that problem. My first application was to line the outer area of pants pockets and a flap piece that goes over the opening to protect cell phone information from being stolen through its signal. Great for travel through airports and other crowds. When going through TSA take your phone out and turn your pocket to the outside!

If you just want to block cell service, this fabric works when wrapped tightly all around. If you want to block EMF's, this will not work and here's how I figured that out for myself:I have a Geman Cemprotec 34 EMF meter as recommended to me by a building biologist to test and a coil tester that came with my PEMF mat (Pulsed Electro-Magnetic Frequency). I am just a hobbyist so take this as context for my casual experiment.Placing my phone inside a single layer of this fabric and completely wrapped it up with many layers of the rest of the fabric underneath the device. EMF meter registers absolutely no change. Magnetic low, Electric low and Wifi mid-range to high, HF high. Two layers, same. Many more layers, same.I then took a baseline of the current environment (no Magnetic and other values had some with wifi being the highest) with my meter and then wrapped my meter in the fabric. The lights show through a single layer easily so I saw that it blocks wifi out and all E, M and F and HF were not present. Good.When I wrap a single layer around my cell phone, calls won't get through and I notice that when I take it out, the cell tower reconnects. Good. Caution as this only happens when it is completely wrapped tightly. Even if the fabric is wrapped around it loosely and with all sides covered, I noticed that frequencies sneak in someway somehow. And, my bluetooth headset (AirPod Pros) appears to lose connection (yet still paired) and no audio came through when I played music to test; only when wrapped tightly and not casually. It's like the bluetooth acts like water to rush into the fabric and bouncing off the angles to get to the source.The fabric will cause your screen to think it's your finger when it's touching the screen so that's something to be aware of. I think it is because my hands/finger is touching the fabric and conducting accordingly.Visually, with a single layer, you can see the screen through the fabric in dark conditions. While porous visually, blowing into the fabric caused no passage of air. When I hold the fabric to my eyes, I can make out some objects especially things with a light source.Testing with my PEMF mat. It's a low power USB powered 5V PEMF mat. You don't feel it when using it unlike the ones from the clinic. The EMF meter and Coil tester tested magnetics no matter how I used the fabric. I also placed a rubber yoga mat fully in between to ensure that the mat's magnetic pulses was not using the fabric as a conductor. The PEMF was able to register past the rubber mat also and this fabric did nothing to shield it. I placed the coil tester just high enough to register the field and also not physically touching the rubber and then slid the fabric between it and the coil tester still registered. When using aluminum foil however, it shielded the field in the same experiment. When the aluminum foil is placed touching the rubber mat, it did not shield the magnetic field entirely although it may had weakened it based on the strength of the led lights in the coil tester so I think the strength of the field (PEMF mat in my case) needs to be taken into consideration in whether this fabric will shield pulsed electro magnetic fields.For what it is worth, it took seven layers of this fabric atop the rubber yoga mat to shield the strength of my PEMF mat underneath.Placing this fabric over my wifi router did nothing to lower wifi signal strength which contradicts the wrapping of the meter so I am puzzled. Could it be that the wifi router emits strong signals that the fabric is defeated? The way I wrapped it had many layers of the fabric on all sides. I thought it would at least lower signal strength or shield it and it had no effect.One thing I had not tested is in grounding the fabric.I don't know if it is fair to give this review from a 1-5 star perspective. By giving it a 4, I hope others see this and can make a more informed decision for their application.

this thing latterly is magic

Living close to a cell phone tower raises concerns about its potential impact on health. To address this issue, I decided to invest in EMF blockers to reduce any stress that may affect the body. Starting with this fabric to potentially make curtains. Prior to making a purchase, I read reviews that mentioned these blockers could prevent cell phones from ringing. However, despite my efforts to use the blocker in various ways, such as making it thicker or folding it, the cell phone continued to ring. It seems that the blocker did not effectively block any signals. In my experience, if you are seeking a solution to block cell phone radiation, based on my investigation, the blockers may not be effective. Let me know if you have any suggestions on how to use the fabric correctly.