Lansinoh Breastmilk Storage Bags are designed for easy and safe storage of breast milk. Each bag holds up to 4 ounces and is pre-sterilized, making them hygienic and ready for use. The bags feature a double zipper seal for maximum protection against leaks and spills, ensuring that your milk stays fresh whether refrigerated or frozen. They are compact and can be laid flat for freezing or stood upright for easy access in the fridge. Each bag includes a large label for easy identification of contents and a convenient pouring spout for transferring milk into bottles. Ideal for mothers who pump directly into the bags, these storage bags are a reliable choice for managing breast milk.