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The main radiation protection component of the cap:
The composition of the fabric: 41
which blocks the RF electromagnetic wave radiation generated by electrical appliances
More people are asking for a way to get safe from RF-EMF frequencies
Shielding effectiveness: 33
Metal Fiber EMF Radiation Protective Hooded Zipper Vest Size:L(For men) The main radiation protection componentNew 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