Designed for convenience, our breast milk storage bags are made from food-grade, BPA-free materials, ensuring milk safety. The double-zip seal provides a leak-proof closure, while the stand-up design allows easy filling and storage. These bags have clear measurement marks and a writeable surface for labeling dates and quantities. They are freezer-safe and can be used for both short-term and long-term storage, with some models compatible with warm water heating for quick use.