Pump Flange Sizing

Did you know that pump flanges come in many more sizes than the (usually) 2 that are provided with your pump?

Accurate flange sizing is important for both comfort and effective milk removal!

It’s kind of a goldilocks situation- your flanges should be “not too big, not too small, but just right.”  If too much of your areola is being pulled into the tunnel, then the flange is too big.  If your nipple is rubbing the edges of the tunnel, then the flange is too small.

I will say- some people can use a size that’s too big without any trouble.  I, for example, now know that I used a flange size that was wayyy too big when I was pumping.  But I was never uncomfortable and I never had any trouble with emptying effectively. But I now wonder… was I really emptying as well as I could have? I wonder if I would have been able to pump more if I was using the appropriate size!

I think it’s much easier to notice when your flange is too small because it is very likely that the friction of your areola rubbing on the edge of the flange tunnel will be uncomfortable. 

How to measure your flange size:

• Get a flange ruler (you can get them from various places, but if you book a flange fitting consult with me, I will send you one)

• Measure your nipple (Measure both nipples! It is possible for them to be different sizes!)

• Add 3-4 mm… and that’s your size!

Different companies make flanges in different increments.  So measure you nipple and use the flange that is closest to the appropriate size as possible and see how that works out.  If that size doesn’t work, it’s possible to mix and match some parts (though I’m sure the pump manufacturers don’t recommend that).

If the traditional flanges aren’t working for you, take a look at Pumpin Pal flanges or LacTeck flanges.

If you aren’t sure of your size or need help troubleshooting other pumping issues, shoot me an email so we can set up a consultation!