---
title: "Momcozy Flange Inserts — $72K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/momcozy-flange-inserts"
last_updated: "2026-08-07T04:44:04.057Z"
locale: en
meta:
description: "Niche score 38/100 · $72K/yr market · 156K searches/yr · $13.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · $72K/yr market · 156K searches/yr · $13.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Momcozy Flange Inserts — $72K/yr Amazon US Niche (2026) - Flapen"
---
# **momcozy flange inserts**
**Skip it**
A small market ($72K/yr) — this niche doesn't clear our bar today.
Market size 18Growth 23Conversion 44Competition 44Returns 41Price 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 5% 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
According to Flapen's Amazon United States niche tracking, momcozy flange inserts is a $72K/yr Amazon United States market (156K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in May. Verdict: Skip it — 38/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **momcozy flange inserts market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **$78K–$104K**
- units × avg price
- **Conversion rate**
- **3.5%**
- **Avg BSR**
- **#40**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **12.4%**
- **Avg brand age**
- **61 months**
- **Avg seller age**
- **153 days**
## **Competition & brand share**
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%**
Top 20: 100%
**Top-5 click share**
**59%**
Top 20: 94%
**Open market**
**7%**
- Momcozy45% - Nursi Luna19% - Nuliie12% - LOTBILL8% - IVARONAL5% - Maymom4% - Open — no brand owns it (6 brands, 7%)
## **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×
[**Open Trend **](https://flapen.com/research/us/baby-products/momcozy-flange-inserts/trend)
## **Top momcozy flange inserts search terms**
- **flange**52K/yr+4.7%1.6% conv. - **momcozy flange inserts**38K/yr-13.7%4.9% conv. - **flanges**25K/yr+0.9%3.0% conv. - **mom cozy flange inserts**16K/yr-10.9%5.1% conv. - **momcozy flange**10K/yr-17.4%5.3% conv. - **momcozy nipple flange**4K/yr+6.0%4.7% conv. - **mom cozy flanges**2K/yr-12.1%4.7% conv. - **momcozy flanges**4K/yr-5.7%3.8% conv. - **momcozy inserts**3K/yr-15.5%5.4% conv. - **mom cozy flange**3K/yr-12.2%5.5% conv. [**All search terms **](https://flapen.com/research/us/baby-products/momcozy-flange-inserts/search-terms)
## **Top momcozy flange inserts products on Amazon**
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 24 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**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**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**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**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**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**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**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**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**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**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**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**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**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**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**Momcozy**$12.02**4.3★**▲ 149%**](https://www.amazon.com/dp/B0G2WWRBDV)
**~~View all trending →~~**
## **What buyers say about momcozy flange inserts**
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%
## **Common questions**
- **Is momcozy flange inserts profitable to sell on Amazon United States?**
- The niche generates $72K/yr across 27 tracked products. 8 of 9 products launched in the last 360 days are still selling. 90-day search growth is -5.0%. Flapen's verdict: Skip it (38/100).
- **How competitive is the momcozy flange inserts niche?**
- 12 brands and 15 sellers compete. The top 5 products take 59% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in momcozy flange inserts?**
- Top complaints mined from reviews: Size-Overall, Durability, Quality-Overall. The return rate is 3.7%.
- **When does demand for momcozy flange inserts peak?**
- Demand peaks in May; the busiest month runs 1.5× the quietest.
- **What does it cost to enter the momcozy flange inserts niche?**
- Listings span $6.97–$41.19; the average listing price is $13.02 (sweet spot $15–$100). The average incumbent carries 1,976 reviews — the moat a new listing must climb.
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