The original idea was to redesign the classic Juice Box so that a sipper is created from the carton itself. Following some initial research, it was decided that this would be achieved through the inclusion of a perforated (laser) tear off section (as used in other TetraPak packaging). It was also decided that the torn off piece would need to remain attached to the carton to avoid the creation of any small pieces of packaging that might not make it into the recycling system. Various prototypes have since been trialled by hacking existing juice boxes and creating the tear-off section from different parts of the carton. The final design represents the most user-friendly design as determined through a process of trial and error.