Medela Breastmilk Storage Solution is a great completion to any Madela breastpump system. This entire system grants you to carefully store, organize and insulate your breastmilk. The bottles, labeling lids and Pump and Save breastmilk bags are suitable with all Medela breastpumps and excellent for short or long term storage. The additional containers are also great to pump into for quick and easy breastmilk storage. To give all expecting and new moms peace of mind, Medela makes sure that all parts that touch the breast milk are made without BPA. So you know it's safe for you and your baby. Why Medela? Breastfeeding. ..the Very Heart of Our Business Medela?s primary focus is breastfeeding. By helping moms to successfully breastfeed their babies and to do so for as long as they choose. Meeting this goal responsibly is at the heart of everything we do. º5 oz breastmilk bottles with screw on leakproof lids º80 ml breastmilk collection containers ºPump & Save breastmilk bags. Available in 20 or 50 count 5oz bags. Contains 2 adapters. Storage tray that can be used in fridge, freezer or counter.