I was reading this article and came across the term 'cooler bag'.
Looking up on the web, they seem to be Thermal bags in which you can have food items. Now if I were to bring food in such Thermal bags, would they be counted as part of carry-on allowance or not ?
I ask as food is something I would eat either in the airport or in air if no meals are being given etc. so it would not remain static as other things, clothes, laptop etc.