Features: - By tearing the nipple closure, you can easily extract breast milk without wasting it. It saves the hassle of opening the zipper and carefully pouring out the breast milk. - For storage and transportation. Once filled with milk, our bags stand upright when the bottom is opened, making storage easier and saving space. - After filling in the corresponding information marks for the brand of the breast milk bag, put the bag in the refrigerator or freeze it to keep your baby's milk fresh. - The single-use storage bag also makes your life easier when you need to thaw and warm breast milk for your baby.