Aseptic packaging, commonly known as a 'drink box', is a combination of paper, plastic, and aluminum. This multi-layer package locks out light and air, seals in nutrients and flavor, and allows its contents to remain un-refrigerated for months. In addition to a drink box, milk and juice cartons are also considered aseptic. Also known as gable-topped cartons, they are often a half-gallon in size, but there are smaller and larger sizes as well.