Maymom21mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra 20mm Replace Pump Parts Spectra Flange Spectra Duckbill Valve

These work great with my Spectra S1, haven’t noticed any difference from the Spectra parts. As other reviewers noted, they work well with the Phillips Avent bottles too. They’ve held up well to constant washing and sterilizing/drying in a bottle sterilizer. Didn’t notice at first, but if you look inside the flange, it says the size

My Spectra came with large flanges. This smaller size really helped with pumping, especially as a mom who is primarily pumping. They fit my nipples perfectly and made pumping more comfortable!

Love these flanges, just as good as spectra flanges! Easy to use, good fit, no complaints.

Price is perfect and fits my spectra and medela pump!

Very durable but make sure you’re getting sized!

Nothing is worst than having to constantly clean your pump parts. If you are thinking about ordering I definitely would. I used these with my Spectra pump and they worked great. It’s so much easier to have extra parts on hand. Great price to and they have held up nicely.

A good replacement or supplemental part for the spectra pump series. The one complaint I do have is that the connection to the backflow protector is not as tight as my original spectra flange, but otherwise, it functions the same. I just have to make sure the connection is tight before starting to pump.

These flanges fit my spectra perfectly and have held up great over the last few months