Blocks most of RF and EF fields (I have a meter). Phone signal is blocked by two-three layers, but not one. Overall is good. Very long, nearly touching the floor
Queen size very nice blocks 99.99, passes cell phone test 100%. fyi u need a bottom barrier to have 100% protection installed on bed with a shield underneath without any holes. otherwise you are radiating more in to your bed unless are on ground level. get copper, tin, preferably silver fiber. but anything to pit under your bed I mean it. also seller has box version thats better. and they respond fast. and did customizations on a blanket making it 4 square meters. highly recommend. usa virtually has no sellers. and 5g protection is essential right now.