Medela recognizes the benefits of breastmilk to your baby's healthy development as well as the time and effort you invest in pumping your breast milk. As every drop counts, Medela's baby bottles are designed exclusively to store, protect and maintain breast milk's complex life enhancing beneficial properties through all the stages of refrigeration, freezing and warming within an optimal temperature range of -2C and +37C. Designed to help you maximize the available expressed breast milk for your baby and reduce your preparation time, you can pump, store and feed your baby from the same bottle. Track and document how much breastmilk your baby consumed with the easy to read graduated lines. Included: 3 x 150ml bottles with lids (BPA-Free) Designed to maintain breastmilk's complex life enhancing beneficial properties Compatible with all Medela Breastpumps and the Calma feeding system - Pump, store, and feed from the same bottle to maximize available expressed breastmilk for baby. Reduces preparation time. BPA-Free, Food-Grade Polypropylene bottle and lid - Non-reactive material ensures breastmilk is protected from deterioration during freezing, refrigeration, and warming. Accurate volumetric graduation lines - Easily read, track and document volume of breastmilk consumed at each feeding What's in the box: 3 - 150ml breastmilk bottle, 3 solid lid, instructions