Portable Cell Phone Anti-tracking Anti-spying GPS Rfid Signal Blocker Pouch Case Bag Handset Function Bag (Black) Anti-radiation,anti-degaussing,anti-signal which can provent you from inflencing by the cellphone radiation .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.", Prevent people from being tracked with this bag,Protect your privacy It is the perfect bag for you when you are sleeping or in some important occasions do not want to be bothered High quality and perfect design, it can be used to pack cellphone, money and card at the same time Size: 3.5 x 7.2 x 0.4 inches