Breast milk storage bags - 50 Pack Store, transport and warm breast milk in these convenient, ready-to-use breast milk storage bags. Constructed from a durable, double layer material (to preserve and protect the breast milk nutrients for long term storage) and built-in double zipper seal to keep your breast milk safely stored in the fridge or freezer. For added convenience the bags are self standing and come with a large write-on area so you can track the date, volume and other important info. A BONUS re-sealable transport pouch is included to help keep bags clean and organized. 6 oz (180 ml) bag capacity Double zipper, for extra leak protection Large write-on area to record date, volume and name Self-standing for easy filling and handling Made without BPA.