Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield, Reduce 24mm Tunnel Down to Correct Size

These flange inserts worked great for my wife. They fit perfectly with her Momcozy S12 Pro and were much more comfortable than using the standard flange size. The soft silicone material creates a good seal and helped improve her pumping experience. We've been using them regularly with no issues, and they are easy to clean as well.

These fit all my pumps and helped me learn what my size was with the measuring tool it comes with

I like that it has a lot of size variations. Great for the price and it works for my spectra.

Very helpful for knowing the size, for best fit, for best results when pumping. Game changer with output because of the varying sizes and options with in the kit. Excellent quality and compatible with all of my different pumping machines.

These helped me tremendously. I was not getting much output before ordering these. Got my correct size and was able to test them out and got much more milk out!!

Very convenient for pumping, down side would be that they feel just a tad loose when inserted but they get the job done

Love that it’s different sizes in 1 box and comes with a sponge to clean them with. They also fit in ever flange which is nice

The item itself works fine but I bought this specific brand for the carrying case that appears in the review pictures. Mine did not come with a carrying case, all the parts were just loose in a box. I probably would’ve gone with a different brand had I known.