Pre-Sterilized: Ready to use, ensuring hygiene and safety. Leak Proof: Double zip lock design to prevent any leaks. Freezer Safe: Can be stored in the freezer for long-term use. Easy to Use: Convenient pour spout for easy transfer of milk. Measurement Markings: Clear markings to measure the amount of milk. BPA-Free: Made from safe, BPA-free materials. Space-Saving