· 2x Two-Piece Breastshield (20 mm, suitable for mothers with nipple_diameter after pumping 18-19 mm),Pano Series , Compatible with all Medela pumps (Compatible with New Medela Pump in Style with MaxFlow, Pump in style, Lactina, Symphony, Swing, Mini Electric, FreeStyle, Swing Maxi, Sonata and Harmony, freestyle flex· 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· Made of Bisphenol-A (BPA)/DEHP-free material and all components are steam safe for sterilization.· Available in various sizes (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 30, 32, 34, 36mm) for purchase.