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Pro A cheaper alternative to electric breast pumps
The Medela manual breast pump is useful as a 'just in case' travel companion, an inexpensive alternative when there are no electrical outlets for you to plug your electric pump in. It's also efficient for short sessions because they require less setup and cleanup compared to electric pumps.
Pro Efficient in stimulating milk flow
The handle swivels a full 180 degrees. Pumping with the smaller side of the handle allows you to create quicker and shallower strokes that trigger a milk letdown (when milk is stimulated from the breast and flows quickly).
Pro Reduces hand discomfort common during manual pumping
The Medela Harmony has an ergonomic swivel handle. It makes it comfortable to use over long pumping sessions since you can adjust it to whatever angle your hand feels best
Con Requires meticulous cleaning
The Medela Harmony, although it has fewer parts than its electric counterpart, has small parts that are hard to reach in and clean.