To breastfeed the baby is not always possible, so the milk needs to be stored until the baby needs it. We have designed TRUMOM Breastmilk Storage Bags with convenient pour spout for transferring free flow of milk into a bottle. It is used for storing and freezing breastmilk. It comes with a double zipper design that ensures no leakage and provides extra security. Bags are BPA free and pre-sterilized for preservation of milk quality. These are self standing bags for easy to use and are marked for accurate measurement.