19mm Silicone Flange Insert, Reduce 24mm Flange Tunnel Down to 19mm, Medela, for Spectra, Momcozy S9 S10 S12 Pro, Paruu P10 R12 P3, kmaier, TSRETE, MomMed, NaNaLazy, NIRGU, Onlyeah, MomWills

As a second time mom I highly suggest this product if you plan on pumping it will help you get an idea of what size flanges & inserts you need for a perfect fit. Keeping in mind your size fluctuates from time to time so it’s best to get a pack of pump inserts in a range of sizes bigger and smaller than your measurement so you can see what works best

The 21mm Works well with Spectra 24mm and lanisoh 25mm flanges

They get 5stars because they saved my poor nips and that’s worth a lot. So I have now bought 6 sets of these which 5 oh were EXACTLY as described and work super great all sizes were there. Well one of the packs which happened to have 3 of 1 size and only 1 of another which happened to be the size I need, so that’s a bit frustrating but like I said the other 5 I bought were exactly as described so just make sure you make sure all sizes are accounted for in pairs.

Definitely a must! It’s unfortunate that you only need this once but it a total game changer

It's ok

This product was recommended to me in the hospital after giving birth by a lactation consultant. After using them to find my correct flange size, I ordered new flanges that fit correctly. Now, milk output is much higher and pumping is so comfortable.After initially using them to find my correct size, I now use them permanently in my portable, wearable pumps. I am so glad these were recommended to me-especially for my peace of mind as a clueless ftm. They are worth it!

I didn't like them, I recommend just buying the correct size flange. The inserts were not comfortable and hard to clean because you're adding another part.

Love that these came in super fast and were ready to be washed and used! I got both 14 and 15 mm flanges and they both work well for me!