Product Overview: The Medela Breast Milk Storage Bag provides a convenient solution for storing and preserving expressed breast milk. Key Features: ‣ Double-walled construction with a secure zipper seal to prevent leaks. ‣ Pre-sterilized for immediate use, ensuring hygiene. ‣ Flat profile allows for space-saving storage in the freezer. Specifications: ‣ Material: Food-grade, BPA-free plastic. ‣ Size: Each bag holds up to 6 ounces (180 ml) of breast milk.