Pre-Sterilized: The bags come pre-sterilized, ensuring they are ready to use and maintaining a sterile environment for storing breast milk. Self-Standing Design: The clever design of the bags allows them to stand upright on their own, facilitating easy transfer of milk between a breast pump and the bag. This feature also makes it convenient to store the bags upright in the fridge, optimizing space. Pour Spout: Each bag is equipped with a pour spout, enabling spill-free transfer of milk. This feature enhances convenience and minimizes waste. Double Zip Closure: The bags feature a double zip closure system to minimize the risk of leaks. This ensures that breast milk is securely stored without any risk of spills or contamination. Freezable: The bags can be safely frozen, allowing for longer-term storage of breast milk. This is especially useful for mothers who need to store milk for future use or who have an excess supply. Overall, the Pigeon Breast Milk Storage Bags offer a user-friendly and reliable solution for breastfeeding mothers to store expressed breast milk conveniently and safely.