WIRELESS RADIATION PROTECTION, RF BLOCKING, WIFI, BLUETOOTH, CELL PHONE, 5G ANTI-RADIATION The premium quality cotton lined with shielding fabric make this beanie a convenient way to protect your head and ears from radiation. It is super comfortable and is well designed for any women and men who need protection from electromagnetic radiation. Blocks radiation from cell phones, WIFI, Bluetooth, 5G, laptops 99.9% effectiveness. It is tested by accredited lab. Protect you and minimise your EMF exposure. Efficiency: 99.9% Shielding Effectiveness (~50dB). Tested by accredited lab. Reduce your concerns on wireless radiation from cell phones, WIFI, laptops, Bluetooth, 5G. The hood provides RF Shielding with edge to edge protection underneath the cotton polyester.  Best for travel, sleeping, pregnancy protection, working Note This product does not shield high frequency radiation like X-Ray.