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How it Works

Silver fabric is made out of the silver fiber. It’s soft, stretchy and comfortable to wear. It’s commonly used for making the anti-radiation cloth, active wear or home textile.


We incorporate it into our hats as a middle layer and some of our products (underwear) are entirely made out of the combination of silver and cotton fibres.

Silver has numerous health properties that have been used across time and culture. It is a powerful antimicrobial agent that aids in cold and flu prevention, wound healing, and skin care. Silver also helps with internal heat regulation and blood circulation. When applied in the right quantity and manner, silver also provides protection against harmful electromagnetic radiation from cellphones and other electronics.

Antimicrobal & Anti-odor

Silver is a natural antimicrobial. That means that microbes – germs – can’t survive in the presence of silver ions. Silver ions released from the surface of silver molecules are harmless for people, but absolutely lethal to menacing microbes.


Positively-charged silver ions create a conductive field that reflects electromagnetic radiation away from the body, much like a mirror reflects light. This field stimulates the body’s existing conductivity, improving blood circulation, temperature balance, and general healing.


Due to the highly conductive silver and its antistatic character, it eliminates the static electricity caused by friction.

All Natural and positive health effects

Silver also helps with internal heat regulation and blood circulation. Silver has a proven track record as a powerful antimicrobial agent fighting infections and aiding in cold and flu prevention, wound healing, and more.

We prepared an explanation video for you. 

Watch how Shield hat works and learn more in FAQ below the video.


What Should You Know

Does the signalproof apparel block 5G network?

The answer is: YES, it does. 

5G or 5th generation of mobile network uses multiple low and high frequencies, for instance 700 MHz or 3500 MHz. It mostly runs on 700 MHz which was used by terrestrial TV in the past and emitted from long distances with very low intensity. Now it comes directly in cities and highly multiplies its intensity. The penetration of 700 MHz into buildings is very good and actually the best amongst all active mobile network frequencies, that’s why it’s going to be used for 5G. 

The second phase of 5G roll out will use much higher frequencies, 20 000 – 30 000 GHz, and this is about to come sometime around 2025. Shielding fabrics are designed to withstand also these super high frequencies but are not officialy tested for them yet.

Basically, most of tests of shielding fabrics are done up to 6GHz since the highest known frequency used commercially in our daily life is WiFi 5.8 GHz. 

Our shielding silver fabric blocks frequencies from 10 MHz to 6GHz (and beyond) which includes also above mentioned 700 MHz. Therefore you’re protected against 5G with SHIELD Signalproof Apparel .

When it comes to the comparison of 5G with 4G or LTE, they use even more frequencies: 800 MHz / 900 MHz / 1800 MHz / 2100 MHz / 2600 MHz.

Can I measure the signalproof feature with a cellphone?

The answer is: Barely.

Dots or ticks on signal indicator are not accurate and each phone model reacts differently. It takes also a longer time until the phone realizes that he is losing the signal. The next problem is that you can not see the reaction of your phone inside the hat. If you put it in and then you pull it out you will not see the real status of the indicator. You would have to be inside the hat with your phone. It`s like testing the waterproof bag under the water. You simply can`t open the bag under the water to check if it is dry. And also the signal strength varies and depends on where you are. If you are very close to the emitter or antenna, then your signal indicator will maybe not drop. The thing is that the hat can`t reduce signals completely, but it reduces them to minimum and they have almost no effect on you. The only reliable way how to test the hat is with certified measuring instruments. We did it as you can see in the video above or you can do it by yourself in these places. Signal strength in the hat is hundreds of times lower than outside.

Is there some evidence the signals are harmful?

We are not saying that it`s proved or we should be scared. And the truth is that there is no official evidence that signals cause something. But there are many studies and plenty of documentaries which are dealing with this topic. And without the wind, the grass does not move. If you want to know more about this issue, here is the list of studies.

Does It really work?

Yes it works thanks to the special silver shielding fabric inside. It has shielding effectiveness 40dB-80dB from 10 MHz to 6 GHz. Silver is also antibacterial, antimicrobial, antiodor and antistatic. Generally it can’t completely protect your head against signals because it should be covered from the top to the bottom. The shielding fabric is tested and it blocks High Frequency & Low Frequency electromagnetic radiation.

It increases the chances of lightning strikes?

No, it definitely doesn`t.

Does it need to be grounded?

No. Faraday cage works also without ground connection regarding the hat. And signals are not amplified without earth bond.

Will signals come through other parts of skull?

If you are thinking about signals that come through other parts of head and hit the inside of the reflective cap, then pass back through the brain a second time or stay inside and multiply their power, then you have to know that it is ridiculous. The signal is not a bullet and the hat is not an amplifier. It`s like giving a question, “why do i feel cold in my winter jacket, it was supposed to protect me against cold and it comes through my sleeves, top and bottom parts.” Nothing is one hundred percent and everything depends on other factors. But in any case, you are not going to freeze in that winter jacket. The frequency of signals inside the hat is very very low and is also decreased by your skin, bones and water in the tissue.

Is this just the tin foil hat?

Our hat is not the improved version of “tin foil hat”. It`s inspired by actual situation and studies. Until now, we`ve known the waterproof, windproof or dustproof feature. Now it`s time to introduce the signaproof feature into fashion. Shield is more beautiful, comfortable and sophisticated hat than tin foil hat.

Why is the signalproof hat more expensive than ordinary hat?

The answer is: because of special shielding fabric inside the hat. Every signalproof hat is made out from the outer layer and inner layer. Inner layer is always the special shielding fabric which consists of the pure silver that assures the highest performance and has other advantages like antibacterial, antimicrobial, antiodor and antistatic feature. There are also cheaper materials for this purpose, for instance copper or steel but they don`t last long time, don`t have additional features or inhibit alergy. And silver is silver.

Why is my cell phone ringing inside the hat?

The answer is: the signal around must be stronger than the hat is able to stop. Signal-blocking hat is not a magic. It`s the pure physics. Special shielding fabric can shield only the particular amount of electromagnetic radiation. Generally, the shielding effect is up to ≈80db. If the signal around is more than this value, what is the very normal and common situation, your cell phone covered by hat will be ringing. But the received signal is reduced almost to the null. It`s the same with waterproof, windproof, bulletproof or other proof materials. If you start shooting from the machine gun to the bulletproof vest, it will fail. If you expose the waterproof jacket to the storm, it will fail. If you expose the windproof pants to the hurricane, it will fail. But you will still stay somehow more protected and comfortable than you would be without it. Signalproof feature is not 100% protection, but it`s worth having it.

Here is the map of EMF Consultants

In case of testing your Shield hat`s shielding efficiency, please contact one of the certified EMF consultants marked on the map below or find one in your country.