---
title: "medela flanges — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/medela-flanges"
last_updated: "2026-07-13T22:33:21.158Z"
locale: en
meta:
  description: "brand-locked demand (top 5 brands take 98% of clicks) — medela flanges doesn't clear our bar today."
  "og:description": "brand-locked demand (top 5 brands take 98% of clicks) — medela flanges doesn't clear our bar today."
  "og:title": "medela flanges — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
---

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# **medela flanges**

**Skip it**

Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.

Market size 40Growth 28Conversion 74Competition 32Returns 39Price range 57Avg price 65Brand share 5Review moat 23Quality gap 38

**Conversion**

**Good****6.8%**

search→purchase rate — share of searches ending in a sale

**Avg price**

**Good****$13.75**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$8.01–$24.08**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Market size**

**Okay****$203K**

$203K/yr · 216K searches

**Returns**

**Okay****4.3%**

return rate — above 6% kills the launch gate

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Competition**

**Okay****66%**

top-5 click share — leaders hold, buyers still browse

**Growth**

**Okay****+2.3%**

90-day search growth — must beat 0% to launch

**Review moat**

**Bad****7,054.67**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Bad****98%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**6 **▼falling

**Sellers**

**22**

**Top-5 brand share**

**98%**

**Open market**

**0%**

- Medela42% - NENESUPPLY24% - Nursi Luna15% - PUMPMOM-US12% - GOCROWEEN6% - Nuliie2%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%$20K20%$41K30%$61K40%$81K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Medela PersonalFit Flex Breast Shields | 2 Pack of Small 21mm Breast Pump Flanges | Made Without BPA | Shaped Around You for Comfortable and Efficient Pumping](https://m.media-amazon.com/images/I/31B0PCLXaHL.jpg)**Medela PersonalFit Flex Breast Shields | 2 Pack of Small 21mm Breast Pump Flanges | Made Without BPA | Shaped Around You for Comfortable and Efficient Pumping**Medela**$15.64**4.6★19,737 rev](https://www.amazon.com/dp/B07L197S97) [2![Nenesupply 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 19mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex](https://m.media-amazon.com/images/I/41UZNEp6XLL.jpg)**Nenesupply 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 19mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex**NENESUPPLY**$14.95**4.4★4,444 rev](https://www.amazon.com/dp/B0CYPFF53J) [3![Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms](https://m.media-amazon.com/images/I/415xYbVux6L.jpg)**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**4.6★2,006 rev](https://www.amazon.com/dp/B0CKZH37FX) [4![19mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories](https://m.media-amazon.com/images/I/31W2ono7BjL.jpg)**19mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories**PUMPMOM-US**$13.54**4.5★440 rev](https://www.amazon.com/dp/B0F7LJ431S) [5![Flange Inserts 13/15/17/19/21mm 5pcs Suitable for Medela Spectra 24mm Shields/Flanges Compatible with Momcozy S12 Pro/S9 Pro/S9/S12 Wearable Breast Pump Reduce 24mm Tunnel Down to Correct Size](https://m.media-amazon.com/images/I/31RZ9-jx9hL.jpg)**Flange Inserts 13/15/17/19/21mm 5pcs Suitable for Medela Spectra 24mm Shields/Flanges Compatible with Momcozy S12 Pro/S9 Pro/S9/S12 Wearable Breast Pump Reduce 24mm Tunnel Down to Correct Size**GOCROWEEN**$8.01**4.4★2,046 rev](https://www.amazon.com/dp/B0BKH4TX4J)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Medela Compatible Flange Breast Shield Inserts 15mm 18mm 21mm Replacement Accessory Pump Part 2 of Each Size 6PC](https://m.media-amazon.com/images/I/31lsVj9nisL.jpg)**Medela Compatible Flange Breast Shield Inserts 15mm 18mm 21mm Replacement Accessory Pump Part 2 of Each Size 6PC**Medela**$13.82**14 rev4mo ago](https://www.amazon.com/dp/B0GL3DQLBJ) [![Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms](https://m.media-amazon.com/images/I/41TicDjnz7L.jpg)**Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms**Nursi Luna**$9.87**2,081 rev2y ago](https://www.amazon.com/dp/B0CY81WHD5) [![Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms](https://m.media-amazon.com/images/I/415xYbVux6L.jpg)**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**2,006 rev2y ago](https://www.amazon.com/dp/B0CKZH37FX) [![Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms](https://m.media-amazon.com/images/I/41Feyi97wML.jpg)**Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms**Nuliie**$9.68**4,179 rev2y ago](https://www.amazon.com/dp/B0CMPBBHMZ) [![Nenesupply 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 19mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex](https://m.media-amazon.com/images/I/41UZNEp6XLL.jpg)**Nenesupply 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 19mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex**NENESUPPLY**$14.95**4,444 rev3y ago](https://www.amazon.com/dp/B0CYPFF53J)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Medela Compatible Flange Breast Shield Inserts 15mm 18mm 21mm Replacement Accessory Pump Part 2 of Each Size 6PC](https://m.media-amazon.com/images/I/31lsVj9nisL.jpg)**Medela Compatible Flange Breast Shield Inserts 15mm 18mm 21mm Replacement Accessory Pump Part 2 of Each Size 6PC**Medela**$13.82**4.6★**▲ 263%**](https://www.amazon.com/dp/B0GL3DQLBJ) [![17mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories](https://m.media-amazon.com/images/I/31c9nCh4cVL.jpg)**17mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories**PUMPMOM-US**$13.57**4.5★**▲ 160%**](https://www.amazon.com/dp/B0F7LF6YJB) [![Medela PersonalFit Flex Breast Shields | 2 Pack of Small 27mm Breast Pump Flanges | Made Without BPA | Shaped Around You for Comfortable and Efficient Pumping](https://m.media-amazon.com/images/I/31B0PCLXaHL.jpg)**Medela PersonalFit Flex Breast Shields | 2 Pack of Small 27mm Breast Pump Flanges | Made Without BPA | Shaped Around You for Comfortable and Efficient Pumping**Medela**$17.98**4.6★**▲ 86%**](https://www.amazon.com/dp/B07MP6MWDV) [![Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms](https://m.media-amazon.com/images/I/415xYbVux6L.jpg)**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**4.6★**▲ 48%**](https://www.amazon.com/dp/B0CKZH37FX) [![Nenesupply 15mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 17mm Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex Connector](https://m.media-amazon.com/images/I/41xWybQLtaL.jpg)**Nenesupply 15mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 17mm Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex Connector**NENESUPPLY**$14.93**4.4★**▲ 43%**](https://www.amazon.com/dp/B0DGFZK7BT)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — +2.3% search growth over the last 90 days.

5K4KSpike '25 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.2×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**20%

*“The best sizing kit”*

**Ease Of Use**15%

*“Easy to use”*

**Quality-Overall**11%

*“Good quality”*

**Ease Of Cleaning**8%

*“The little cleaning sponge is wonderful”*

**Value For Money**7%

*“Good value for money”*

**Comfort-Overall**6%

*“So comfortable”*

**Breastfeeding Friendly**6%

*“Very helpful and useful for breastfeeding”*

**Portability**4%

*“Portable”*

**Advertised Vs Actual Product**3%

*“Exactly What I Needed”*

**Durability**3%

*“Durable”*

### **What buyers complain about **

**Functionality-Overall**15%

*“No longer works”*

**Size-Overall**14%

*“These are huge”*

**Durability**10%

*“Broke quickly”*

**Quality-Overall**6%

*“cheaply made”*

**Value For Money**4%

*“Not worth the money”*

**Ease Of Cleaning**4%

*“They are difficult to clean”*

**Comfort-Overall**4%

*“Very uncomfortable”*

**Ease Of Use**4%

*“which can be frustrating”*

**Compatibility-Overall**3%

*“This does not work for the Swing Maxi”*

**Product Condition**2%

*“Recieved used product. Hair and lint”*

### **Top return reasons **

**Size-Overall**49%

**Functionality-Overall**16%

**Advertised Vs Actual Product**6%

**Defective Material/Parts**6%

**Breastfeeding Friendly**3%

**Value For Money**3%

**Comfort-Overall**2%

**Material Quality**2%

**Width**1%

**Product Condition**1%