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. All breastfeeding supplies in this set including the breast milk bottles, labeling lids, and breast milk bags are compatible with all Medela breast pumps 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. What 's Included: - (6) 5oz. / 150ml breast milk bottles - (6) 2.7oz. / 80ml breast milk bottles and lids - (6) labeling lids - (25) 6oz. / 180ml breast milk storage bags - (1) Storage tray - (1) Breast Milk Storage Guidelines magnet *IQVIA ProVoice Survey; November 2017 – October 2018 Gender: unisex.