The Medela Breast milk storage bottle combines quality and convenience. The bottles are designed to keep breast milk safe and are compatible with all Medela pumps that work with bottles, so you can pump and store your milk in the same container. Thanks to the screw-on lids, they are airtight for safe storage, transport and freezing. Our storage bottles can be cleaned in the dishwasher (top rack only) and disinfected with our Quick Clean sterilization bags. The bottles are durable and unbreakable. Made without BPA.