Metal Fiber EMF Radiation Protective Hooded Zipper Vest

New 2021! This hoodie is the latest innovation in the world of EMF protection apparel.  Features:  Frequency range: 30MHz-18GHz. Shielding effectiveness: 12.2dB-49.4dB Metal fiber fabric composition: 41.8% cotton, 32.1% polyester fiber, 26.1% metal fiber. [NOTE]: The maintenance method of metal fiber: Metal fibers are tough, and folding in a short time will not damage, but long-term folding and extrusion will produce metal fatigue and affect the metal structure. Therefore, it is recommended to hang store metal fiber clothes. 1. Can be washed with ordinary neutral detergent and detergent can be; 2. Hand wash, can be brushed with a soft brush, avoid rubbing and machine washing; 3. After washing, you can't wring it, remove it directly from the water, and keep it cool; 4. You can't bleach your clothes with bleach or wash your clothes with a detergent that contains bleach; 5. If the clothes appear pleated, the medium temperature irons, the temperature is not more than 110 degrees Cel