The perfect collection to complement a Medela breast pump. This complete Breast Milk Storage System by Medela is made without BPA, allows mom to safely store, organize and protect her breast milk throughout her breastfeeding experience. Medela breast milk bottles, labeling lids, and Pump & Save breast milk bags are compatible with all Medela breast pumps and ideal for short or long-term storage. The extra containers are also great to pump into for fast, easy breast milk storage.