The audio begins with the familiar rustle of a polythene sack, a common household item used for various purposes. It's a lightweight bag, perhaps for carrying groceries or other small items, made from thin, flexible, plastic material. There's a distinct sound of the bag being slowly opened, the plastic crinkling and stretching as it expands, creating a noise that is easily recognizable. The audio carries the essence of everyday life, bringing to mind the simple act of opening a plastic bag and the various tasks it could be used for.