Some shipping methods you pay by the ounce, some by the pound. You'll probably see more kraft paper in methods paid by the pound, because the kraft paper is les

Some shipping methods you pay by the ounce, some by the pound. You'll probably see more kraft paper in methods paid by the pound, because the kraft paper is less expensive than the air pillows, and there's more slack to the next increment when paying by the pound. But for shipping methods paid by the ounce, a more expensive air pillow can keep the package from going up to the next ounce. That's one dimension of determining the proper dunnage. The other is, air pillows are more easily popped by heavier items or items with sharper edges (think blister packs), so the extra weight / shipping cost of the kraft paper averages out to be less expensive than the returns for damaged goods.