Pre-Sterilized: The breast milk storage bags come pre-sterilized, ensuring they are hygienic and safe to use right out of the box. Reusable: Each bag can be reused, eliminating the need for disposable bags and reducing waste. This makes them a cost-effective and environmentally friendly option. Leakproof Design: The bags feature ziplock technology, providing a leakproof seal to prevent spills and ensure the safe storage of breast milk in the fridge or freezer. BPA-Free: Made from 100% BPA-free plastic, these bags prioritize the safety of your breast milk and your baby. Freezer Safe: The bags are suitable for freezing breast milk, allowing you to store milk for longer periods without compromising its quality. Thermosensor Indicator: The Thermosensor bags come with an indicator that changes color to signal when the milk is defrosted, providing added convenience and peace of mind. Capacity: Each bag has a capacity of 180ml, providing ample space for storing breast milk. The Cherub Baby Reusable Breast Milk Storage Bags offer a convenient, safe, and environmentally friendly solution for storing breast milk, allowing parents to easily express, store, and serve breast milk to their baby at their convenience.