02/16/2026
I get this question often: what exactly IS the tip 🗻 of the ni**le that we're supposed to measure 📏 for fl**ge fitting?
For some people, the tip is more obvious 👀 than for others, this is true.
Ultimately, the good news 📰 (I hope) is that measuring (or assessing) the tip diameter is just a starting point.
Pumping should feel like "nothing" or "a gentle tug". If it hurts, it's not the right size. Sometimes going smaller than you even think will fit helps you find the right size. It's an art, not a science...and the person pumping ultimately has to decide what feels best AND gets the most milk out.
Fl**ges come as small as 9mm (the diameter of the tunnel).
There are also different shapes of fl**ges and different materials. All of these factors influence comfort and milk flow.
To learn more about fl**ge fitting as a person who plans to pump, is pumping, or helps other people with pumping, see https://www.babiesincommon.com
Or, post your questions below or DM me!
~ Jeanette Mesite Frem, MHS, IBCLC, CCE
Creator of the Fl**ge FITS Guide
**gesizematters **geFITS
