The PersonalFit Flex breast pump kit has everything you need to go with your Medela Freestyle, Swing Maxi, or Duo electric breast pump. This convenient kit features Medela’s classic pumping accessories, including breast shields, connectors, and bottles with stands and lids, plus extra tubing. What's Included: PersonalFit Flex Breast Shields 21mm(x2), 24mm(x2), PersonalFit Flex Connectors(x2), Bottles 150ml/3oz (x2) with stands (x2) and lids(x2), Tubing (1x). This kit is compatible with Medela Freestyle, Swing Maxi, and Duo Breast Pumps only. Breast Pump is not included. Content appearance may vary from pictures.