Shielding effectiveness of LVFEIER products was tested by accredited institutes and verified to have up to 30-35 dB shielding effectiveness for 25% Metal (non-lead metal) fiber, 55% Cotton, 20% polyester fabric .This dress top reduces risks of everyday RF radiation. It blocks excess RF radiation but not for fully blocking cell phone signals purpose. LVFEIER products made with 100% Silver nylon blend fabrics are suggested for completely shielding cell phone signals.
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