Many people associate notations such as 'A4', 'A3', 'B1', and 'B2' when they hear 'paper size'. This notation used for the size of copy paper and notebooks is defined by the international standard ISO ...
Generally speaking water bottles are often cylindrical type, but the impact resistant plastic made in Australia "Memobottle(Memorabotoru) "is a water bottle with a rectangular shape like a notebook.