10PCS Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps, Silicone Flanges Insert for Momcozy/Spectra Electric Breast Pump, Pumping Essential Kit for Moms

This is just perfect. Different sized flange with a measuring card that helps to identify the correct size you need for the pumps.

Good quality fit well to spectra S1 flange

I have tried to make them work by applying lanolin before and after but they are constantly feeling like they are pricking me!! I have angled them but still the pain doesn’t go!! I tried 16mm and then 18mm but still they are not feeling the same. Will throw them away

Perfecto, es igual a la foto. Fue lo que esperaba, es compatible con el extractor s12 de Moncozy. Recomendado

Ótimo! Muito confortáveis e adaptáveis a várias bombas

Perfeito

The hospital lactation specialist recommended this set. It is compatible with the spectra s1/s2!

So far so good! they fit into my Frida mom flanges along with my spectra flanges. I don’t know what I was expecting them to be because obviously it says silicone, but I was sort of scared that they would fall out of the flanges but the silicone grips really well and I have no issues with them staying in.