Description : Fishing Hats Anti-Radiation Shielding Effective Shielding 99.99% Protect Brain Cap Outdoor Sun Protective Travel Beach Outer fabric:100% cotton fabric Internal material:Radiation-proof lining; 100% Silver fiber nanolayer The main function of this product is to shield electromagnetic radiation generated by 4G, 5G, wifi and other signals electromagnetic radiation generated when making calls, sending and receiving text messages, and electromagnetic radiation generated by small household appliances such as microwave ovens when working The main function of this product is not to shield the signal of the mobile phone or pad Unisex anti-radiation hat, fabric composition: outer layer: 100% organic cotton, inner layer: 100% silver fiber Nanometer silver fiber worsted technology, good shielding performance, light and thin material, good air permeability |