Medela Harmony Flex Manual Breast Pump shaped around you, the Harmony Flex manual breast pump includes our Personal Fit Flix Breast Shield .Featuring our Flex technology theyre designed to suit your breast shape, giving you more comfort and your baby more milk.The Harmony breast pump includes a soft-touch, ergonomic swivel handle to utilise our research-based, patented 2-Phase Expression Technology. Harmonys single vacuum manual settings are easy to adjust, making the pumping experience convenient and more comfortable. Mothers have the flexibility to switch between the modes by adjusting the handle.