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Flanges & Fitting: History and Evidence.
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Flanges and Fitting: The Updated History and More Recent Evidence
(NOW WITH AN EXPANDED ZOOM ROOM!)
The FREE Webinar Every Perinatal Professional Needs to Watch
Wednesday, October 7, 2026
12pm EDT
An updated version with new evidence and newer flange options currently on the market. The refreshed version provides the most up-to-date guidance and better supports our new VIP experience.
Join our FREE webinar to discover the surprising history of flanges, why the old “just add 2-4mm” method is failing families, and how new research is changing the game.
You’ll walk away with practical steps to help clients pump more milk, with less pain, and earn 1 L-CERP while you’re at it!
Here's What's Included
- Earn 1 L-CERP
- Learn the science behind smaller flange sizes
- See what's available on the market and how to support clients better by trying various shapes and sizes
Will You Join Me?
Please note that this webinar was previously recorded, but has been made available so more people can access this valuable, practice-changing information.
Who's It For?
If you work with parents (IBCLCs, breastfeeding counselors/educators,
nurses, midwives, doulas, doctors, and all perinatal professionals),
this webinar is for you.
Pumping discomfort and/or disappointing milk yields are such challenges for families,
and guess who gets the frantic phone calls--YOU!
there IS Data Demonstrating a better way to size flanges…and it’s not the old “just add X millimeters” approach.
If your Clients Ever Say:
- “Pumping hurts.”
- “I don’t know if this flange is the right size.”
- “I’m not getting much milk.”
…then this webinar is a must-attend.
What You'll Learn
- The History of Flanges and Breast Pumps - who invented them and why that matters
- The "Traditional" vs. "Updated" Sizing Approaches - and why the previously-recommended way of flange sizing is still failing too many families
- Flange Market Overview - which options are available for families and professionals to choose from
- The Evidence Behind the "Smaller Flanges" Approach - first-of-its-kind research, plus some other thought-provoking studies
- How YOU Can Learn How to Better Support Your Clients - an updated approach, using the now-available tools
Who's It For?
If you work with parents (IBCLCs, doulas, nurses, midwives, or any perinatal pro), this webinar is for you.
Pumping discomfort is driving families nuts, and guess who gets the frantic phone calls? YOU!
Now there’s actual data proving a better way to size flanges…and it’s not the old “just add X millimeters” approach.
If your clients ever say:
- "Pumping hurts"
- "Im not getting much milk."
- "I don't know if this flange is the right size."
…then this webinar is a must-attend.
Oh, and did we mention you’ll get 1 L-CERP*? Because you deserve professional credit for leveling up your skills.
Why You Need This Guide:
Enhance Client Comfort
Eliminate nipple pain/discomfort with a customized flange fitting, fostering a positive pumping experience.
Boost Milk Supply
Optimize pumping efficiency (duration of the pumping session), which will increase milk yield for some of your clients.
Professional Credibility
Provide evidence-based recommendations that build your clients’ trust and confidence in your care.
There has never been evidence for the “standard” flange sizes, and most of our clients need 13-17mm flanges…it’s RARE to need 18 or larger (they exist, but are not common).
Meet Your Host
Jeanette Mesite Frem, MHS, IBCLC, CCE
Jeanette is an experienced IBCLC-lactation consultant and birth professional, the creator of the Flange FITS™ Guide, and co-author of the first-ever published study comparing "standard" and smaller flange sizes.
She has provided in-person and online edeucation for tens of thousands of lactation and perinatal professionals to rethink flange fitting for increased client comfort, and often improved milk output. Her mission: empower professionals to confidently fit flanges based on the results of a flange fitting session—not guesswork.
Meet Your Host
Jeanette Mesite Frem
MHS, IBCLC, CCE
Jeanette is a lactation and birth professional, the creator of the Flange FITS™ Guide, and co-author of the first-ever published study comparing standard and smaller flange sizes.
She’s trained thousands of professionals to rethink flange fitting, increase client comfort, and improve milk output. Her mission: empower professionals to confidently fit flanges based on the results of a flange fitting session—not guesswork.
The One Thing You Need to Understand
Flange size is not one-size-fits-all. Smaller flanges don’t just "feel better"; they can literally reshape pumping outcomes for your clients—faster results, higher output.
This single shift in perspective
will revolutionize how you approach flange fitting and dramatically improve outcomes
for your clients.
HOWEVER, it’s NOT just “go smaller”. The vital approach inside the FREE Flange FITS™ Guide is to figure out how small of a flange to start with and how to assess for which size (and shape and material) feels the best and yields the most milk--WITH your client! This is not a measure-and-tell-them-their-size approach.
The 3 Core “Secrets” You Need To Know About Flange Sizing
‘One-Size-Fits-Most’ Became the Standard—and It’s Failing Families
The real story behind pump manufacturers’ sizes is that no one seems to have questioned the flange size since two men invented the flange in the early 1800s. There’s never been a study looking at different size flanges–until now!
The Flange FITS™ Approach Outperformed Standard Sizing in Our Study
During this webinar,
you’ll hear the step-by-step breakdown of how we measured, tried different flanges, and observed flange fit for maximum milk output and comfort.
You’ll hear about the surprising “sweet spot”
in flange diameter that makes pumping painless—participants called
it “very comfortable or feels like nothing."
There Are Simple Strategies to Implement This Research in Your Practice Right Away
You’ll hear how to turn your new knowledge into
real-world results without needing fancy equipment or advanced credentials.
Why not make yourself
one of the local lactation heroes by solving a problem that has stumped lactation pros for years: “Why do some parents pump so little, so painfully?”
a special bonus for YOU!
Those who view the webinar will get a PDF summary of the research study plus 14-Day Replay Access*, and 1 L-CERP!
We would LOVE for you to join us if you can!
*Note: The replay will be available for viewing 14 days from the date you start watching. Instructions to access the recording will be emailed to you, so be SURE to check your junk, spam, promotions, and/or subscriptions folders. Please note, if you unsubscribe from emails from Babies in Common, you won’t receive the notification about the replay.
Only ONE Live Session This Time...Don’t Miss It!
Imagine how your clients will feel when they finally find a flange fit that works—less pain, more milk, and way less stress.
“In our study, participants pumping with smaller flanges saw a mean increase of 15 grams more milk
per session—and rated their comfort as significantly higher!”
What Parents Are Saying
[After the flange fitting] I was able to pump at a much higher power level than before -- for example, I wasn't able to go higher than 2 or 3 on my Spectra, but now I can go to 9, 10, sometimes 11 with no pain! It's wild! Before it would take many minutes for my letdown, and now it's nearly instant. I don't really know very well how much more milk I'm getting because I wasn't pumping regularly before the fitting because it was so painful and slow. However, I know for certain that it's much faster to get to 4 oz (sometimes less than 10 minutes total both sides while before I was lucky to get to 4 oz even after 20 minutes total). [Now] I feet a lot more in control and I understand more what is happening. So it gave me a lot of confidence and made it seem less...random and painful. Now that I'm back at work this is incredibly helpful and a relief as my baby is relying upon me pumping and I still need to actually get work done.
~ Stephanie
[The flange fitting session] ensured I found the right flange size for yield and comfort. Your consultation also helped be understand what to expect, what effective pumping looks like and how to actually use the pump features.
~ Brandy
I was using a flange that was too big for my nipples and I found pumping uncomfortable. When Jeanette gave me the proper size, I found pumping to be much more comfortable, and I was able to tolerate pumping for a longer period of time. This allowed me to collect enough milk to exclusively breastfeed my daughter, while working full time! Flange fitting changed my breastfeeding experience and allowed me to be successful in breastfeeding my daughter for 16 months (and counting!). I was so nervous to have to pump when I went to work full time, but with Jeanette's expert guidance, we found the right flange size that allowed me to be comfortable while pumping and helped me retain my milk supply.
~ Melanie
What Others Are Saying
I was using a flange that was too big for my nipples and I found pumping uncomfortable. When Jeanette gave me the proper size, I found pumping to be much more comfortable, and I was able to tolerate pumping for a longer period of time. This allowed me to collect enough milk to exclusively breastfeed my daughter, while working full time! Flange fitting changed my breastfeeding experience and allowed me to be successful in breastfeeding my daughter for 16 months (and counting!). I was so nervous to have to pump when I went to work full time, but with Jeanette's expert guidance, we found the right flange size that allowed me to be comfortable while pumping and helped me retain my milk supply.
~ Melanie
[After the flange fitting] I was able to pump at a much higher power level than before -- for example, I wasn't able to go higher than 2 or 3 on my Spectra, but now I can go to 9, 10, sometimes 11 with no pain! It's wild! Before it would take many minutes for my letdown, and now it's nearly instant. I don't really know very well how much more milk I'm getting because I wasn't pumping regularly before the fitting because it was so painful and slow. However, I know for certain that it's much faster to get to 4 oz (sometimes less than 10 minutes total both sides while before I was lucky to get to 4 oz even after 20 minutes total). [Now] I feet a lot more in control and I understand more what is happening. So it gave me a lot of confidence and made it seem less...random and painful. Now that I'm back at work this is incredibly helpful and a relief as my baby is relying upon me pumping and I still need to actually get work done.
~ Stephanie
[The flange fitting session] ensured I found the right flange size for yield and comfort. Your consultation also helped be understand what to expect, what effective pumping looks like and how to actually use the pump features.
~ Brandy
STILL GOT QUESTIONS? WE GOT YOU!
Frequently Asked Questions
What if I can’t Watch now?
No problem! Everyone who registers will receive access to a 14-day replay of the webinar from the day it is released. You’ll still get the full training, earn 1 L-CERP*, and receive the PDF of the research study if you watch the webinar within the 14-day time period AND submit for your CERP.
Will I still get the bonus if I watch the replay?
Yes! As long as you watch the replay within 14 days, you’ll receive:
- The PDF summary of the study
- The Flange FITS™ Guide
- 14-day replay access
- 1 L-CERP
What’s the date and time of the webinar?
You’ll receive the link in your confirmation email for the replay right after registering AND you'll be redirected to the page.
The webinar will take place on Wednesday, October 7, 2026 at 12:00pm EDT (New York Time) time. Use a time zone converter like this one to find out when it is starting where you are.
How do I collect my CERP?
You will receive an email with instructions after you watch the webinar and you can access it via the webinar page.
Is this webinar approved for CERPs?
Yes! You’ll earn 1 L-CERP simply for watching the webinar. Details on how to claim your certificate will be shared on the page and via email.
Is this really free?
Yes! The webinar is 100% free to attend. There is an optional VIP upgrade available for those who want to learn more about implementing flange fitting into their practice, bonus content, and additional CERPs—but it’s not required.
Who is this webinar for?
This session is designed for IBCLCs, breastfeeding counselors, nurses, midwives, doctors, and any perinatal professionals who support pumping families. Whether you’re new to flange fitting or already helping clients with it, you’ll walk away with some new information to hep you better support your clients.
How will I access the webinar?
After registering, you’ll receive an invitation containing your unique Zoom link for the day of the webinar. Be sure to check your junk or promotions folder if you don’t see it.
After registering, you'll be redirected to the page where the webinar will take place. We will also email you a replay link. Be sure to check your junk or promotions folder if you don’t see it.
What’s covered in the webinar?
We’ll explore:
- The history of flange sizing and how traditional "standard sizes" came to be
- The evidence supporting smaller flange sizes (based on our published study as well as clinical practice)
- See what's on the market--there are new options for flanges and inserts since last year's presentation!
- What you can do immediately to improve pumping outcomes for your clients
Can I ask questions during the webinar?
Yes, absolutely! I always leave time at the end for Q&A for you to ask questions in real time. If you attend live, you should be able to elect to have closed captions for translations, but only if you attend live (and we cannot guarantee the quality of the translations or that Zoom provides all languages). Translations will not be provided for the replay, unfortunately, but there are some wondering translation apps you may find to help.
No, since the live webinar has already taken place, you cannot ask questions in real time. However, you can ask them in our Facebook group!
Yes! We’ll have a live Q&A segment at the end, so bring your questions. Jeanette will be answering as many as time allows.
*1 L-CERP approved by IBLCE. Babies in Common has been accepted by the International Board of Lactation Consultant Examiners® (IBLCE®) as a Preferred Provider for the listed Continuing Education Recognition Points (CERPs) programme. Determination of CERPs eligibility or CERPs Provider status does not imply IBLCE’s endorsement or assessment of education quality. As a Preferred Provider, Babies in Common attests that it complies with the WHO Code and subsequent WHA resolutions.
*L-CERP approved by IBLCE
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