Duckbill valve for Spectra-transparent, set of 4
Includes 4 duckbill valves for the Spectra S1, S2 or 9. Color is clear silicone. This is a Maymom product.
It's important to regularly change out these valves for optimum pumping output.
Can also be used with Medela pumps if you prefer them to the valves and membranes.