Unisex Anti Radiation Cap/toque Half Or Full Silver Fiber Electromagnetic Wave Rfid Shielding

SPECIFICATIONSBrand Name: NoEnName_NullGender: UnisexFeature: PROTECTApplicable Season: Four SeasonsDepartment Name: ADULTOrigin: Mainland ChinaCN: AnhuiMaterial: COTTONMaterial: POLYESTERApplicable Scene: CasualStrap Type: AdjustableModel Number: C0503VK1641Pattern Type: SolidRelease Date: Summer2022Hat Size: One SizeItem Type: Baseball capsPlace Of Origin: China (mainland)Style: Casual The products we sell: Electromagnetic radiation protective caps（half/full Silver fiber） The main radiation protection component of cap: 50% Silver fiber+metal fiber double-layer radiation protective cap (Outer fabric: 41.8% cotton, 32.1% polyester fiber, 26.1% metal fiber; Specific composition of inner fabric: 50.6% polyester fiber, 49.4% silver fiber) Frequency range: 10MHz-18GHz Shielding effectiveness: 40dB-70dB 100% Silver fiber double-layer radiation protective cap (Outer fabric: Tooling polyester cotton; Specific composition of inner fabric: 100% silver fiber) Frequency range: 9KHz-40GHz Shield