PRE-STERILIZED MILK BAGS DESIGNED EXCLUSIVELY FOR STORING BREAST MILK: Designed for collecting, storing, and freezing breast milk. These bags are 100% leak-proof with double zipper seals. They feature a convenient pour spout and a large tab on top to record your information. Each bag holds 6 ounces of milk. LEAK-PROOF GUARANTEED - DON’T WASTE A DROP: These superior milk storage bags are designed in a way that makes it easy to pour milk into and out of these bags without spilling a drop. Two zippered closures, extra-thick plastic, a gusset-free bottom, and reinforced side seams all contribute towards guaranteed spill-proof bags. SAVE ON COST AND SPACE: DiRose breast milk storage bags are the most economical and safe way to store your precious breast milk. Made of sturdy food-grade BPA-free plastic, these breast milk pouches are specifically designed to keep your milk safe, organized and sanitary. The oxygen barrier keeps breast milk fresh during storage. SPACE SAVING: STAND UP OR LAY FLAT IN THE REFRIGERATOR OR FREEZER: DiRose Breast Milk Storage Bags safely and securely store precious breast milk in either the refrigerator or freezer until you are ready to feed your baby. Our unique stand-alone feature makes DiRose the BEST BREAST MILK BAG STORAGE FOR PUMPING MOMS. MEASURING GUIDE PRINTED ON THE FRONT FOR ADDED CONVENIENCE: DiRose strives to make the entire breast milk storage process as efficient as possible. The accurate measurements on the front help moms assess how much milk to pour into each bag. Measurements are provided in both ounces and milliliters.