Maymom MyFit Crater Series Breast Shield for Medela is a breast shield that connects with Medela Breast Pumps. MyFit Crater series features a comfortable fit without pressure points and pains, providing efficient pumping due to better seal and less void space. Crater Series is best for bowl-like shaped breast. Compatible with all Medela Pumps (Please refer to compatibility chart in image) New Medela Pump in Style with MaxFlow, Pump in style, Lactina, Symphony, Swing, Mini Electric, FreeStyle, Swing Maxi, Sonata and Harmony, Freestyle Flex Made of Bisphenol-A (BPA)/DEHP-free material and all components are steam-safe for sterilization. Retail poly-bag packed; sealed by the manufacturer – Maymom, not original Medela parts US FDA-registered medical device (No. D192499) Connectors are not included in this product. Includes: 2x Maymom MyFit Crater Breast Shield ONLY