Zomee pump parts are all BPA-free, 100% food-grade silicone, and made in FDA-compliant facilities. Fits all Zomee original and Flex breast shields. Simply attach your breast shields to the breast shield (flange) body by inserting them securely into the funnel. Compatible with all Zomee wide neck bottles. Properly assembling your shield kit is essential to get the ideal performance while pumping. This part does not need to be cleaned regularly, and only as part of the general maintenance of your breast shield kit.