Pro-Silver Fiber Electromagnetic radiation protective hooded zipper vest

New 2021! This hoodie is the latest innovation in the world of EMF protection apparel.  Features:  Multiple pockets with zippers. 100% silver fiber fabric composition: 100% silver fiber. Frequency range: 9KHz-40GHz. Shielding effectiveness: 45.0dB-68.6dB. [NOTE]: 1. The silver fiber anti-electromagnetic radiation fabric is relatively thin. Therefore, it is not suitable for making clothing. Instead, it is usually used as the lining in clothing. Therefore, our silver fiber anti-electromagnetic radiation work clothes are double-layered, and the outer layer is polyester-cotton fabric by default. 2. Silver fiber anti-electromagnetic radiation fabrics exhibit excellent shielding performance under high-frequency electromagnetic radiation environments. The greater the shielding effectiveness value at a certain frequency point or frequency band, the better the protection effect, usually 30dB (equivalent to a shielding rate of 99.9% ). This is an excellent rate.   The maintenance method of si