Golden KocoonE M F Organic Cotton & Bamboo Blend Slouch Beanie with a Bamboo Faraday Fabric Liner - Adult Size in Black -Shield 5 g, Cell Towers,Bluetooth,Smart Meter & WiFi- Golden Cocoon Hat Cap

Love the hat, hope it does what it supposed. Based on other reviews, I assume it does. I like the look of it too.

I feel like my brain is wrapped in a cocoon. It's quiet in my head when I wear it. I sleep with it on since I keep my phone close at night for various reasons.

Yes! It freaking works! Also purchased the larger blanket by the same company. Just tested it with the TriField meter…. It works! I’m super impressed. Remember all of these products must be hand washed.

It was made for Bart Simpson cone head, when you flip it up it shows where and what it’s made of. Put my phone inside and didn’t even show one less bar on reception.

Love this. Can't prove it works, but it makes me feel comfy.