WHAT YOU GET : 2 detachable breastshields (30mm), 2 base connectors, 2 valves, 4 membranes. Does NOT include tubings. COMPATIBLE with Medela Pump in Style (but not PIS with MaxFlow Pro Pro+), Madela Swing (but not Swing Maxi), and Madela Symphony breastpumps. Made by Maymom. Compatible with Medela pump parts. Replacement for Medela Personalfit connector, Medela breastshield, Madela tubing, Madela valves, Madela membranes, and Madela bottles. Comply with FDA regulations for plastic materials that contact food. Material does NOT contain BPA and DEHP. Can be sanitized with, boiling water, water steam or microwave-steam bags. ERGONOMIC DESIGN: Longer tunnel and smooth angle. Suitable for elastic nipples. EASY TO USE: Detachable breastshield for easy cleaning and working with most hands-free bras. Maymom Brand 2x Two-Piece Small Breastshield with valve, membranes and Maymom Connector,Compatible with Medela Breast Pumps Top Hole Version. (30 mm)