Were You Flange Fitted and Still in Pain? Here’s The Scoop
Ileana Berrios, MS, IBCLC
Finding your flange size is crucial when you’re pumping — but if you’re still feeling pain, irritation, or frustration after being sized, you’re not alone.
The truth is, flange fitting isn’t just about measurement. It’s about matching the right size and type for your body.
Let’s dive into why flange types matter just as much as sizing — and how you can finally find a fit that makes pumping comfortable, effective, and empowering.
Size is Only Half the Story
When parents hear “flange fitting,” they usually think about measuring the nipple and picking the right millimeter size (like 17mm, 19mm, etc.).
But here’s the thing:
A flange that fits your nipple size but not your breast anatomy can still cause pain, swelling, irritation, and even lower milk output.
Your flange type — meaning the shape, material, and design — also needs to match how your body moves during suction.
Common Signs You May Have the Wrong Flange Type
- Nipple pulls away from the tunnel during pumping
- Flange doesn’t rest fully against the breast
- Discomfort, redness, or irritation even with “correct” sizing
- Slower milk flow or emptying
- Pumping feels exhausting or painful
Sound familiar?
Then it’s time to evaluate not just your size — but your flange shape.
Understanding Flange Types and Shapes
Not all flanges are created equal. Here’s a breakdown of common types:
Triangle Flanges
(The Traditional Flange Shape)
- Best for: Individuals with average breast shapes and typical nipple elasticity.
- Design: Triangle flanges are the basic design included with many pumps, like Spectra and Medela.
- Potential Issues: May cause irritation if the areola is pulled too much or the flange doesn’t rest on the breast properly.
Comfy Flanges
(Enhanced Comfort Flanges)
- Best for: Sensitive nipples or individuals who experience pressure with traditional flanges.
- Design: Made with softer materials and ergonomic shapes to reduce pressure and friction.
- Potential Issues: If not properly fitted, can still cause nipple pulling or tunnel rubbing.
Crater Flanges
(Rounded Flange Shape)
Best for: Individuals with rounder, fuller breasts.
Design: These flanges create a better seal across a broader breast surface, promoting stronger suction and comfort.
Bonus: Great at preventing irritation and improving milk expression.
Pano Flanges
(Wide, Elliptical Flanges)
Best for: Flatter breast shapes or larger volume breasts.
Design: These flanges have a wide, oval opening (around 105°) that better matches the chest wall, creating a complete contact seal.
Bonus: Helps support effective milk removal and reduces soreness by distributing pressure more evenly.
Pano Flanges
(Wide, Elliptical Flanges)
Best for: Flatter breast shapes or larger volume breasts.
Design: These flanges have a wide, oval opening (around 105°) that better matches the chest wall, creating a full contact seal.
Bonus: Helps support effective milk removal and reduces soreness by distributing pressure more evenly.
Visual Example: Poor vs Great Flange Fits
When evaluating flange fit, here’s what to look for:
Great Fit
Nipple centered in tunnel
Flange resting 95%-100% against breast
Smooth, even contact
Comfort during and after pumping
Poor Fit
Nipple away from tunnel
Flange floating off breast
Pressure points on areola
Pressure points on the areola, the areola, and larger volume breasts.
If your nipple isn’t centered, if your flange doesn’t stay snugly on the breast, or if you leave each session feeling sore — it’s time to rethink your flange type.
General Tips for Optimal Flange Fit
- Assess the Fit While Pumping: Your nipple should move freely within the tunnel without excessive rubbing or pulling of the areola.
- Monitor Comfort and Output: Pain, redness, or a drop in milk flow are big red flags.
- Work with a Lactation Professional: Personalized guidance can help you choose the perfect size and shape.
Why Flange Shape Can Change Your Pumping Life
Choosing the right flange shape can:
- Boost your milk output
- Reduce nipple trauma and discomfort.
- Shorten pump sessions
- Make exclusive pumping or combo feeding sustainable for longer.
Small changes in flange type can mean the difference between frustration and freedom.
Still in Pain After Flange Fitting?
Let’s Fix That.
At The Pumping Solution, we don’t just size you —We match you.
Our pump consultations are designed to:
- Analyze your breast and nipple anatomy
- Recommend the best flange shape and size
- Help you adjust pump settings for maximum comfort and milk output
- Prevent pain, clogs, and emotional burnout
Ready for a better pumping experience?
Book your Flange and Pump Consult at www.breastfeedinglatinas.org
Purchase your perfect fit at www.ThePumpingSolution.com
Spots are limited — book early for the best fit!
Your Comfort is Non- Negotiable
Breastfeeding and pumping are demanding enough — you shouldn’t have to fight your equipment too.
When size and shape both match your body, pumping can feel natural, easy, and even empowering.
You deserve a pain-free, powerful pumping journey. Let’s get you there.