Breast milk can be stored in an insulated cooler with frozen ice packs for up to 24 hours when you are traveling. At your destination, use the milk right away, store it in the cooler bag.
This is essential to keep your breast milk cool for an extended time. Think about the amount of milk you typically need to transport and look for a bag that can accommodate that many bottles (or more). It is a convenient bag for working women who still want to breastfeed their babies. This cooler bag cools the breastmilk upto 12 hours.