Case made of 600D polyester with conductive RFID internal shield. Blocks all cellular, WiFi And Bluetooth® signals, including incoming phone calls, text messages and notifications while sealed inside the case. All voicemails, text messages and notifications will appear after removing your phone from the case. Eliminates human error while driving by providing a physical barrier stopping the urge to check your phone. Fits most smartphones up to size 18x9cm. Fits up to 4 phones. Perfect for meetings or dinners.