---
title: "momcozy flange inserts — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/momcozy-flange-inserts"
last_updated: "2026-07-13T20:19:10.186Z"
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meta:
  description: "a small market ($72K/yr) — momcozy flange inserts doesn't clear our bar today."
  "og:description": "a small market ($72K/yr) — momcozy flange inserts doesn't clear our bar today."
  "og:title": "momcozy flange inserts — Niche Verdict: Skip it (38/100) | Amazon United States - Flapen"
---

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# **momcozy flange inserts**

**Skip it**

A small market ($72K/yr) — this niche doesn't clear our bar today.

Market size 18Growth 23Conversion 44Competition 44Returns 44Price range 76Avg price 59Brand share 26Review moat 45Quality gap 50

**Price range**

**Great****$6.97–$41.19**

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

**Avg price**

**Good****$13.02**

avg listing price — sweet spot $15–$100

**Quality gap**

**Good****4.5★**

avg incumbent rating — lower means beatable quality

**Review moat**

**Okay****1,975.89**

avg incumbent reviews — the moat a new listing must climb

**Conversion**

**Okay****3.5%**

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

**Competition**

**Okay****59%**

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

**Returns**

**Okay****3.7%**

return rate — above 6% kills the launch gate

**Brand share**

**Okay****89%**

top-5 brand share — brands hold most of the demand

**Growth**

**Bad****-5.0%**

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

**Market size**

**Bad****$72K**

$72K/yr · 156K searches

## **Competition**

The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**12 **—flat

**Sellers**

**15**

**Top-5 brand share**

**89%**

**Open market**

**7%**

- Momcozy45% - Nursi Luna19% - Nuliie12% - LOTBILL8% - IVARONAL5% - Maymom4% - Open — no brand owns it (6 brands, 7%)

## **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%4%$3K8%$6K12%$9K16%$11K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 27 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 15/17/19/21mm](https://m.media-amazon.com/images/I/31iKOD1KtLL.jpg)**Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 15/17/19/21mm**Momcozy**$14.02**4.3★2,611 rev](https://www.amazon.com/dp/B0FCY8919Y) [2![Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 19mm 4 Pack](https://m.media-amazon.com/images/I/31rpFdB5CzL.jpg)**Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 19mm 4 Pack**Momcozy**$14.04**4.3★2,611 rev](https://www.amazon.com/dp/B0FCXY8ZWL) [3![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**4.6★2,081 rev](https://www.amazon.com/dp/B0CY81WHD5) [4![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**4.6★4,179 rev](https://www.amazon.com/dp/B0CMPBBHMZ) [5![Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield Reduce 24mm Tunnel Down to Correct Size](https://m.media-amazon.com/images/I/41OcGg5lVUL.jpg)**Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield Reduce 24mm Tunnel Down to Correct Size**LOTBILL**$7.34**4.6★583 rev](https://www.amazon.com/dp/B0CL96VP1C)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Momcozy Flange Insert 15mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 15mm](https://m.media-amazon.com/images/I/41HOKKO31fL.jpg)**Momcozy Flange Insert 15mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 15mm**Momcozy**$12.12**1,166 rev5mo ago](https://www.amazon.com/dp/B0G2WP5TMS) [![Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm](https://m.media-amazon.com/images/I/41m1oOdl0oL.jpg)**Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm**Momcozy**$12.02**1,166 rev5mo ago](https://www.amazon.com/dp/B0G2WWRBDV) [![Momcozy Flange Insert 15/17/19/21mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS](https://m.media-amazon.com/images/I/41E+T5c9zXL.jpg)**Momcozy Flange Insert 15/17/19/21mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS**Momcozy**$11.98**1,166 rev5mo ago](https://www.amazon.com/dp/B0G2WWP6Z4) [![Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms](https://m.media-amazon.com/images/I/51GT53yIMsL.jpg)**Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms**Nuliie**$9.90**445 rev5mo ago](https://www.amazon.com/dp/B0GJRV3N1Q) [![Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack](https://m.media-amazon.com/images/I/31Mm6FLwDXL.jpg)**Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack**Momcozy**$21.64**1,175 rev5mo ago](https://www.amazon.com/dp/B0G6CQBKH7)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms](https://m.media-amazon.com/images/I/51GT53yIMsL.jpg)**Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms**Nuliie**$9.90**4.5★**▲ 203%**](https://www.amazon.com/dp/B0GJRV3N1Q) [![Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size](https://m.media-amazon.com/images/I/410IrfxgswL.jpg)**Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size**Momcozy**$41.19**4.3★**▲ 194%**](https://www.amazon.com/dp/B0D66JT3LS) [![Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack](https://m.media-amazon.com/images/I/31Mm6FLwDXL.jpg)**Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack**Momcozy**$21.64**4.4★**▲ 174%**](https://www.amazon.com/dp/B0G6CQBKH7) [![Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 17mm 4 Pack](https://m.media-amazon.com/images/I/31jaxOl8qpL.jpg)**Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 17mm 4 Pack**Momcozy**$14.20**4.3★**▲ 153%**](https://www.amazon.com/dp/B0FCXRNKB8) [![Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm](https://m.media-amazon.com/images/I/41m1oOdl0oL.jpg)**Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm**Momcozy**$12.02**4.3★**▲ 149%**](https://www.amazon.com/dp/B0G2WWRBDV)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -5.0% search growth over the last 90 days.

3K2KPrime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: May · busiest ÷ quietest = 1.5×

## **Reviews**

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

### **What buyers love **

**Size-Overall**31%

*“Good variety of sizes”*

**Quality-Overall**14%

*“One thing that really stood out to me was how well-made”*

**Ease Of Use**9%

*“This made it so easy for me”*

**Value For Money**8%

*“Good price”*

**Comfort-Overall**7%

*“So comfortable”*

**Breastfeeding Friendly**6%

*“Very helpful and useful for breastfeeding”*

**Advertised Vs Actual Product**5%

*“As advertised”*

**Ease Of Cleaning**4%

*“The little cleaning sponge is wonderful”*

**Compatibility-Overall**3%

*“Compatible with Frida Mom manual pump”*

**Durability**2%

*“they are pretty durable”*

### **What buyers complain about **

**Size-Overall**19%

*“Does NOT fit”*

**Durability**15%

*“several more have broken previously”*

**Quality-Overall**7%

*“Quality is a little cheaper then I was hoping for”*

**Value For Money**7%

*“Expensive”*

**Comfort-Overall**6%

*“Very uncomfortable”*

**Defective Material/Parts**5%

*“Part Breaks”*

**Product Condition**4%

*“Got sent used & dirty flanges”*

**Adhesion/Stickiness**4%

*“Splits apart weak adhesive doesnt clip together to hold in place”*

**Ease Of Cleaning**3%

*“they are kind of a pain to insert and clean and the output isnt as good as just using the correct size pump accessory”*

**Compatibility-Overall**3%

*“Incompatible with Elvie Stride”*

### **Top return reasons **

**Size-Overall**64%

**Defective Material/Parts**6%

**Functionality-Overall**6%

**Advertised Vs Actual Product**5%

**Width**3%

**Value For Money**2%

**Comfort-Overall**2%

**Material Quality**2%

**Breastfeeding Friendly**2%

**Product Condition**1%