Medela’s breast milk storage solutions set is the perfect complement to any Medela breast pump and makes for a great registry or gift item. As our complete system of breastfeeding supplies, each product included is designed to address your needs as a breast milk feeding mom and your baby’s changing requirements as he or she grows and develops through the length of your breastfeeding journey. The breast milk storage solutions set allows you to easily and conveniently store, organize, and protect your breast milk, so you always know what bottles to feed next, the amounts that you’re pumping, and how much your little one is consuming. What’s Included: (6) 5-Oz. / 150 mL breast milk bottles; (6) 2.7-Oz. / 80 mL breast milk bottles and lids; (6) labeling lids; (25) 6-Oz. / 180 mL breast milk storage bags; (1) Storage tray; (1) Breast Milk Storage Guidelines magnet. All breastfeeding supplies in this set – including the breast milk bottles, labeling lids, and breast storage bags – are compatible with all Medela breast pumps with bottles and are ideal for short-term and long-term storage. The complete system allows you to safely store, organize, and protect your breast milk throughout your breastfeeding experience. Convenient, ready-to-use breast milk storage bags are constructed from a durable, double layer material and built-in double zipper seal to keep your breast milk safely stored in the fridge or freezer. Please note that plastic bottles and component parts become brittle when frozen and may break when dropped. Also, bottles and component parts may become damaged if mishandled, dropped, over-tightened, or knocked over. Take appropriate care in handling bottles and other components. Do not use breast milk if bottles or components become damaged.