Product Overview: Leak-proof and hygienic breast milk storage bags designed to securely store and preserve milk while maintaining freshness. Key Features: ‣ Pre-sterilized and ready for immediate use. ‣ Double-zipper seal ensures leak-proof storage. ‣ Gusseted bottom provides stability for upright storage. ‣ Writable area for easy date and content labeling. Specifications: ‣ Material: BPA-free, food-grade plastic ‣ Size: 180ml