Product Overview: The Medela Valves & Membranes set is essential for maintaining the performance of your Medela breast pump contributing to a comfortable and efficient pumping experience. Key Features: ‣ Compatible with various Medela breast pumps, including Swing, Mini Electric, and Harmony models. ‣ Easy to assemble and disassemble for thorough cleaning. ‣ Made from safe, BPA-free materials, ensuring the highest quality for mothers and babies. Specifications: ‣ Material: Polypropylene (valves) and silicone (membranes), both BPA-free ‣ Size: Standard dimensions compatible with specified Medela breast pump models