Disposable milk bag Leakproof double seal Well sealed, ensuring safe storage of breast milk with 2 sealing strips. Pre-sterilized storage bag with a peel-proof seal Indicate that the storage bag is unopened to use. PET and PP materials BPA-free, the storage bag is safely storing valuable breast milk in the refrigerator and freezer for extra peace of mind. Rugged and self-supporting Allows the bag to be stored standing upright, with wide openings to inject in or pour out the breast milk easily.