a white nylon bag / large
A business bag.
My cousin Lap sent me a photo of the Khaki and Yellow suits before shipping them to Canada and I noticed this weird tyvek bag on the bench that had a 1.5L water bottle in it.
He told me a woman at the market collected the materials from people around the neighbourhood and sewed them into little carry bags.
I asked him to go back and buy a dozen bags, so that we too may carry our water.