No.2 Warehouse Canvas Protective Anti-Radiation Signal Blocking Case for Cell Phone (Canvas Black)+ a Piece of Clean Cloth High quality and perfect design, Can be used as a wallet at the same time Anti-radiation, anti-degaussing, anti-signal Prevent people from being tracked with this bag, Protect your privacy If you don't want to answer the phone, you can put the phone in the bag, then the phone will tell "Calls can not be connected." ID card, bank cards such as IC Magnetism card into the bag, it can avoid magnetism lost and information leak