Silver fiber electromagnetic wave radiation protection hat neck sleeve scarf mobile phone computer blue light radiation protection headgear Note:This product is multifunctional and can be used as a hat, headgear and also as a scarf Radiation-proof clothes can be washed directly with ordinary neutral washing powder or liquid, and the washing method is similar to that of ordinary clothes; 1. Product attributes:Size: adjustableColor: Grey/Wine red/Black Material properties:Outer fabric Fabric: 100% cottonInternal material Lining: 100% nano - silver fiber (anti - radiation material). 2. Product features:Nanometer silver fiber worsted technology, good shielding performance, light and thin material, good air permeability;Washable and wear-resistant;The protective material suitable for civil use is a kind of green environment-friendly cloth;Anti-radiation, anti-static, can be close-fitting. 3. Product use:Used for electromagnetic radiation shielding protection, suitable for all kinds of places with radiation;Reduce the radiation generated by high-frequency rf EMF of wirele network modems and routers, bluetooth devices, smart meters, cell towers, mobile phones, microwave ovens, wirele phones and security systems;Reduce the radiation generated by low-frequency electric fields such as wires, electrical boxes, household appliances and high-power transmiion lines;Effectively protect the head (abdomen). 4. Product cleaning method:The radiation-proof products can be washed directly with ordinary neutral washing powder or liquid, and the washing method is similar to ordinary clothes;Wash the radiation protection products with hands and try not to use the washing machine;don't wring dry after cleaning, directly remove from the water to dry;The water temperature shall not exceed 90 degrees;Iron at a temperature not exceeding 150 degrees;Do not bleach or use washing products containing bleach. Tips Due to the difference between the lighting and the display, the color of the product will be subject to the actual situation.