Medela’s PersonalFit Flex Connectors offer a closed system for your Medela Pump in Style with MaxFlow, Swing Maxi, and Freestyle Flex breast pumps. Large openings and less parts were designed to make cleaning easier. Great as a spare set or replacement for worn or damaged connectors. Medela Authentic Pump Accessories: Only Medela offers replacement connectors tested and designed to work with your Pump in Style with MaxFlow, Swing Maxi, or Freestyle Flex breast pumps. Includes two complete connectors. Please note PersonalFit Flex Connectors are NOT compatible with Pump in Style Advanced, Freestyle, Sonata, Swing and Harmony breast pumps. Made without BPA, safe for you and baby.