These are two items that can be used with your Medela Breastpump to better meet your breast milk collection and storage needs. The Freemie Collection Cups Deluxe Set includes two 8-oz concealable collection cups (16-oz capacity total) and two sets of breast funnels (25 mm and 28 mm). They are compatible with all Medela breast pumps making it easy to pump and store. Medela Pump and Save Breast milk Bags save time pump or pour into bag with the new easy connect adaptor for fast, easy breast milk storage. Oxygen barrier preserves and protects breast milk nutrients. No leak, easy to close zipper top and no spill, stand up bottom. Made without BPA Safe for Mom and Baby. All Medela breast milk bottles and products that come in contact with breast milk are and always have been made without BPA. Authentic Medela spare parts are engineered, tested and approved to work specifically with your Medela breast pump. Made without BPA safe for mom and baby. All Medela breast milk bottles and products that come in contact with breast milk are and always have been made without BPA.