Why Proper Flange Sizing is Key to Comfortable Pumping and Better Milk Supply
- Brittany Cooper-Frishman
- Sep 12, 2024
- 2 min read
Updated: Dec 21, 2024
Did you know that getting properly sized for your flange can make a HUGE difference in both your milk production and comfort? If you're using the standard 24mm flange that came with your pump, it may not be the right size for you!
Why Flange Size Matters
Flanges come in different sizes (measured in millimeters), and while many of us start by measuring our nipple diameter and adding a few millimeters to figure out our size, it’s not always that simple. Lactation is nuanced—there’s more to it than just a measurement!
Factors like nipple elasticity and how your nipple moves during pumping can affect what size works best for you. Your perfect flange size might be slightly different (+0-4mm) than what you initially thought.
Don’t Settle for Pain or Low Milk Supply
It’s totally normal to try a few different sizes before you find the one that feels comfortable and works best for your body. If you’re feeling pain, seeing cracked or bleeding nipples, or experiencing low milk production, don’t settle! These could be signs that your flange isn’t the right fit.
Your comfort and milk supply are worth it, so take the time to find your perfect size. You deserve a pumping experience that’s comfortable and productive!
Remember, there’s no “one size fits all” when it comes to breastfeeding and pumping. Trust your body, experiment with different sizes, and don’t be afraid to reach out for help if needed.
Takeaways:
Don’t assume the 24mm flange is the right size for you.
Measure your nipple size but consider other factors like elasticity.
Trial and error is part of the process—try 2-3 sizes to find the best fit.
If you’re feeling pain or discomfort, it’s worth adjusting your flange.




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