What are the measurements of the large backpack? The large backpack is 42cm in length, 29cm in width and 12cm in depth. Related articles How long does it take to get my order? Are the bento spare Trays compatable with the Penny Scallan bento boxes? Which labels are dishwasher safe? My Bento Box has broken, is there a warranty? How will I know when my order has been dispatched?