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Unisex / One Size Fits All / Adjustable velcro strap on back - Natural cotton outer layer / No synthetics - 100% silver inner liner for extremely high shielding capacity

Protects the head and brain from wireless/microwave radiation. 5G ready! The 100% Silver inner lay provides extremely high shielding capacity! Shielding effectiveness tested from 300MHz at 99.999970% (65.3dB) effectiveness, all the way up to 20GHz at 99.999915% (60.7dB) effectiveness.

Fully washable, durable. Excellent for travel, daily wear, provides very high protection for the head and brain from the harmful effects of wireless radiation.

Wear this hat for the best protection from microwave radiation, all the way up into the 5G frequency range! No obnoxious logos or labels on the product. Nobody will know what you are wearing and that you are an EMF protection secret agent! Soft, comfortable, breathable, highly effective shielding capacity from top quality protective material.