Medela Flange Size Chart: Your Ultimate Guide to Perfect Pumping
Find your ideal flange size with my expert guidance and detailed chart
As a mother who has navigated the pumping journey twice and reviewed countless breast pumps on my website, I can’t stress enough how crucial the right flange size is for your comfort and milk output. The Medela Flange Size Chart is your roadmap to achieving optimal pumping results, and I’m here to guide you through every step of finding your perfect fit.
After years of testing different pumps and helping thousands of mothers through my blog, I’ve learned that 80% of pumping discomfort stems from incorrect flange sizing. Let me share everything I’ve discovered about Medela’s sizing system.
Why the Right Medela Flange Size Matters
I remember my first pumping experience with my eldest – the pain, the low output, the frustration. It wasn’t until I discovered I was using the wrong flange size that everything changed. The right size transforms your entire pumping experience by:
• Maximizing milk output – Proper fit creates optimal suction
• Preventing nipple damage – No more soreness or cracking
• Ensuring comfort – Pumping should never be painful
• Reducing pumping time – Efficient milk removal means shorter sessions
Complete Medela Flange Size Chart
| Nipple Diameter | Recommended Flange Size | Medela Part Number | Best For |
|---|---|---|---|
| ≤ 17mm | 21mm | 800.0770 | Small nipples, first-time mothers |
| 17-20mm | 24mm | 800.0769 | Average size, most common |
| 20-23mm | 27mm | Standard with pump | Standard size, comes with most pumps |
| 23-26mm | 30mm | 800.0794 | Larger nipples, experienced mothers |
| 26-28mm | 32mm | 800.0795 | Large nipples |
| ≥ 28mm | 36mm | 800.0796 | Extra large nipples |
How to Measure Your Nipple for the Perfect Medela Flange Size
I’ve measured hundreds of mothers through my consultations, and I always emphasize that accurate measurement is the foundation of comfortable pumping. Here’s my proven step-by-step method:
You’ll need a ruler or measuring tape (preferably in millimeters), good lighting, and optionally, a mirror for better visibility.
I always recommend measuring after pumping or nursing when your nipple is at its largest. This ensures you get the most accurate size for optimal fit.
Stand or sit comfortably in front of a mirror with good lighting. Hold the ruler horizontally across the base of your nipple.
Visual guide showing proper nipple measurement technique
Measure the diameter of your nipple only – not the areola. The measurement should be taken at the widest part of your nipple base where it meets the areola.
Based on my experience, I recommend adding 2-4mm to your measurement. This allows for nipple expansion during pumping and prevents painful pinching.
Understanding Your Nipple Shape
Through my reviews and consultations, I’ve noticed that nipple shape affects flange selection as much as size:
Flat or Inverted Nipples
If you have flat or inverted nipples like I did with my second baby, you might need a slightly larger flange size. The extra space allows your nipple to protrude properly during pumping.
Long Nipples
For longer nipples, ensure there’s adequate tunnel depth. Sometimes a larger flange prevents the nipple from hitting the back of the tunnel.
Large Areolas
Don’t let a large areola fool you into choosing a bigger flange. Always measure the nipple diameter, not the areola.
Signs You Have the Wrong Medela Flange Size
Too Small Flange:
• Nipple rubs against tunnel sides
• White or discolored nipple after pumping
• Painful pumping sessions
• Reduced milk output
• Nipple feels compressed
Too Large Flange:
• Areola pulls into the tunnel
• Loss of suction
• Inefficient milk removal
• Nipple moves excessively in tunnel
• Longer pumping sessions needed
My Expert Tips for Medela Flange Success
Professional Recommendations:
Start with the standard 27mm that comes with your Medela pump, then adjust based on comfort and effectiveness.
Consider breast changes – Your size might change throughout your breastfeeding journey, especially in the first few weeks postpartum.
Test during different times – Some mothers need different sizes for morning versus evening sessions due to natural breast changes.
Don’t forget replacement – Flanges wear out over time. I recommend replacing them every 2-3 months for optimal performance.
Where to Buy the Right Medela Flange Size
Based on my extensive product testing, I recommend purchasing genuine Medela flanges directly from authorized retailers. Counterfeit flanges can compromise both comfort and safety.
Related Resources from Breast Pumps Hub:
📊 Use my Flange Size Calculator for instant sizing recommendations
📏 Complete guide on How To Measure Your Nipple For Flange Size
💙 Spectra S1 Breast Pump Review – Compare with Medela options
📈 Spectra Flange Sizes Chart for comparison
🌸 Momcozy Flange Size Chart – Alternative sizing options
Final Thoughts on Medela Flange Sizing
After reviewing dozens of breast pumps and helping countless mothers find their perfect fit, I can confidently say that the right Medela flange size is a game-changer. Don’t settle for discomfort or poor milk output – you deserve a pumping experience that works for your unique body.
Remember, every mother’s journey is different, and what worked for me might need adjustment for you. Trust your body, use this chart as your guide, and don’t hesitate to try different sizes until you find your perfect match.
Remember: If you’re experiencing persistent pain or very low milk output despite trying different flange sizes, consult with a lactation consultant. Sometimes the issue goes beyond sizing and requires professional guidance.
