Note: The main function of this product is to shield EMF electromagnetic radiation generated by 4G, 5G, wifi and other signals; EMF electromagnetic radiation generated when making calls, sending and receiving short messages, and EMF electromagnetic radiation generated by small household appliances such as microwave ovens when working. Note: The main function of this product is not to shield the signal of the mobile phone or pad. Simply wrapping the mobile phone with a hat to see if there is a signal will not be able to test the product performance correctly. If you need to test product performance, you need to use the emf electromagnetic radiation tester (the instrument in the main listing picture) for testing. Note: The first time you wear it may be a little tight, but they have super elasticity, please rest assured to wear，Therefore, please measure your head circumference before buying. Unisex anti-radiation hat, fabric composition: outer layer: Acrylic/ Acrylique , inner layer: 100% silver fiber； Excellent production and humanized design：The 100% nano silver fiber is between the interlayers of the woolen cap to ensure good warmth and comfort when wearing. Nanometer silver fiber worsted technology, good shielding performance, light and thin material, good air permeability; Washable, wear-resistant and washable; Silver fiber is conductive and Effective shielding rate 99.99% from computers, mobile phones.Protect the brain, head and neck； The hat is soft, has good air permeability, protects the head and neck, You can also wear this hat when you sleep. Long hat with strong plasticity, which can create a layered hat shape.
Brand: Save Green Life
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