Feature(may vary by option.)

●GOOD MATIARIAL EMF HAT:100% Silver fibre liner.Outer layer:100% cotton
●COMFORTABLE:Lightweight and also keeps head warm when walking in cold weather.
●ONE SIZE FIT ALL:The EMF hat with elasticity,suitable for all head circumference,one size fit all.
●HIGH SHIELDING EFFICIENCY:Shielding Efficiency up to 99%,Proctect you head from WIF,5g,Cell Tower,Bluetooth, .etc.Shielding Efficiency will not reduce for 10 years,Easy to clean, machine washable.
●DO NOT TEST BY CELL ! ! ! :Please use an EMF Meter to test it.Do not test by wrapping a cell insider the EMF Hat.

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Description