2x shields Pano Series ( 19mm, suitable for mothers with niple diameter AFTER pumping 17-18 mm) , Compatible with Medela pumps (New Medela Pump in Style with MaxFlow, Pump in style, Lactina, Symphony, Swing, Mini Electric FreeStyle, Swing Maxi, Sonata, Freestyle Flex and Harmony). NOTE: connectors are not included in this listing. Also compatible with Lansinoh SignaturePro SmartPump Manual Pump, replace Lansinoh Pump Parts, Lansinoh Flanges. | Flange opening is 105 degree, more suitable for mothers with large breasts or flatter contour breasts; Soft and flexible edge for more comforts; Larger cup size for more covered area of breasts during pumping; elliptical-shaped design to rorate and adapt for comfortable pumping | US FDA registered medical device (No. D192499); Products are inspected by US FDA. Complies with US FDA and EUstandards for containers that contact food and class II medical device; Test reports are online for your reference; Retail poly-bag packed; sealed by the manufacturer - Maymom, not original Medela parts | Made of Bisphenol-A (BPA)/DEHP-free material and all components are steam safe for sterilization. | Available in various sizes (15, 17, 19, 21 mm) for purchase.