2x Two-Piece Breastshield (24 mm, suitable for mothers with nipple_diameter after pumping 22-23 mm). Compatible with all Medela pumps (New Medela Pump in Style with MaxFlow, Pump in style, Lactina, Symphony, Swing, Mini Electric, FreeStyle, Swing Maxi, Sonata and Harmony, Freestyle flex. Also compatible with Lansinoh SignaturePro SmartPump Manual Pump, replace Lansinoh Pump Parts, Lansinoh Flanges. | US FDA registered medical device (No. D192499); Products are inspected by US FDA. Complies with US FDA and EUstandards for containers that contact food. Tested by independent labs for quality and safety. Test reports available for reference. | Retail poly-bag packed; sealed by the manufacturer - Maymom, not original Medela parts. | Made of Bisphenol-A (BPA)/DEHP-free material. Can be cleaned with boiling water or water steam. | Available in various sizes (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 34, 36mm) for purchase.