Description : Effective 99.99% Anti Radiation Cap Multicolor EMF Protection Hat Shielding Cell WiFi 5G RF Hat 50-60cm/19.6-23.6 in 100% Cotton Unisex anti-radiation hat, fabric composition: outer layer: organic cotton, inner layer: 100% silver fiber Nanometer silver fiber worsted technology, good shielding performance, light and thin material, good air permeability; Washable, wear-resistant and washable Anti-radiation, anti-static, can be worn next to the skin Silver fiber is conductive and can shield 99.9% of the radiation from computers, mobile phones and Wi-Fi, and alleviate the radiation damage to the human body |