Compact, lightweight, and portable: Take the Harmony breast pump with you wherever you go. PersonalFit Flex Breast Shield: For greater comfort and more milk. 2-Phase Expression Technology: Its unique lever helps you mimic your baby's natural sucking rhythm. Discreet and quiet: Express with confidence anytime, anywhere. Easy to use and clean: Simple assembly and disassembly. Harmony is easy to disassemble and clean.