Medela Harmony is a single, manual breast pump designed for occasional time away from your baby. This breast pump is a great option for travel or as an occasional back-up to your double electric breast pump. A small, lightweight, and portable design makes transport easy and discreet for convenient pumping at home, at work, or on the go. Best of all, an included Medela PersonalFit Flex breast shield means more milk faster, when compared to the traditional breast shield. These shields are designed to reduce pressure on the breast and optimize milk flow, giving you more milk faster. What's Included: (1) Harmony Breast Pump (handle, diaphragm, stem with o-ring); (1) 24 mm PersonalFit Flex Breast Shield; (1) 5oz Breast Milk Bottle with Lid; (1) Valve & Membrane; Instructions for use