---
title: "lansinoh flange inserts — Niche Verdict: Skip it (26/100) | Amazon United States - Flapen"
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last_updated: "2026-07-13T22:29:49.608Z"
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  description: "prices mostly outside the sweet spot ($7.75–$13.81) — lansinoh flange inserts doesn't clear our bar today."
  "og:description": "prices mostly outside the sweet spot ($7.75–$13.81) — lansinoh flange inserts doesn't clear our bar today."
  "og:title": "lansinoh flange inserts — Niche Verdict: Skip it (26/100) | Amazon United States - Flapen"
---

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# **lansinoh flange inserts**

**Skip it**

Prices mostly outside the sweet spot ($7.75–$13.81) — this niche doesn't clear our bar today.

Market size 10Growth 20Conversion 78Competition 10Returns 49Price range 0Avg price 32Brand share 8Review moat 43Quality gap 24

**Conversion**

**Great****7.6%**

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

**Returns**

**Okay****3.1%**

return rate — above 6% kills the launch gate

**Review moat**

**Okay****2,151.38**

avg incumbent reviews — the moat a new listing must climb

**Avg price**

**Okay****$9.88**

avg listing price — sweet spot $15–$100

**Quality gap**

**Bad****4.6★**

avg incumbent rating — lower means beatable quality

**Growth**

**Bad****-9.1%**

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

**Market size**

**Bad****$41K**

$41K/yr · 55K searches

**Competition**

**Bad****88%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****97%**

top-5 brand share — brand-locked demand

**Price range**

**Bad****$7.75–$13.81**

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

## **Competition**

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**6 **▼falling

**Sellers**

**10**

**Top-5 brand share**

**97%**

**Open market**

**0%**

- Lansinoh59% - Nursi Luna16% - Nuliie13% - Luxemum5% - BDICOVE4% - Maymom3%

## **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%15%$6K30%$12K45%$19K60%$25K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 8 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Lansinoh ComfortFit Breast Pump Flanges Size 21mm 2 Count](https://m.media-amazon.com/images/I/41q5hde2JaL.jpg)**Lansinoh ComfortFit Breast Pump Flanges Size 21mm 2 Count**Lansinoh**$7.75**4.6★3,697 rev](https://www.amazon.com/dp/B093G3TRSW) [2![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) [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![Lansinoh ComfortFit Breast Pump Flanges Size 28mm 2 Count](https://m.media-amazon.com/images/I/41-Bs-Sa4zL.jpg)**Lansinoh ComfortFit Breast Pump Flanges Size 28mm 2 Count**Lansinoh**$11.85**4.6★3,697 rev](https://www.amazon.com/dp/B093G2C39F) [5![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)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![4Pcs Breast Pump Flange Insert 19mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange](https://m.media-amazon.com/images/I/41NtL85s+QL.jpg)**4Pcs Breast Pump Flange Insert 19mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange**BDICOVE**$7.90**635 rev1y ago](https://www.amazon.com/dp/B0DS6YWTCF) [![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) [![Flange Inserts 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps Compatible with Momcozy KISSBOBO Lansinoh Elvie Willow go Spectra Medela Freestyle Flex Pump Shields10PCS](https://m.media-amazon.com/images/I/41EsEiyO17L.jpg)**Flange Inserts 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps Compatible with Momcozy KISSBOBO Lansinoh Elvie Willow go Spectra Medela Freestyle Flex Pump Shields10PCS**Luxemum**$8.13**221 rev2y ago](https://www.amazon.com/dp/B0CTGZC6FN) [![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)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![4Pcs Breast Pump Flange Insert 19mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange](https://m.media-amazon.com/images/I/41NtL85s+QL.jpg)**4Pcs Breast Pump Flange Insert 19mm Compatible with Momcozy/Spectra/Medela/eufy/Elvie/Lansinoh/Paruu P10 Breast Pump Fit for Momcozy M5/M9/M6/V2 Pro/V2 pro/S12 Pro/eufy E10 S1 S1 Pro 24mm Flange**BDICOVE**$7.90**4.5★**▲ 64%**](https://www.amazon.com/dp/B0DS6YWTCF) [![Lansinoh ComfortFit Breast Pump Flanges Size 28mm 2 Count](https://m.media-amazon.com/images/I/41-Bs-Sa4zL.jpg)**Lansinoh ComfortFit Breast Pump Flanges Size 28mm 2 Count**Lansinoh**$11.85**4.6★**▲ 56%**](https://www.amazon.com/dp/B093G2C39F) [![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★**▲ 31%**](https://www.amazon.com/dp/B0CKZH37FX) [![Maymom Compatible 17mm Breastshield Flange for Lansinoh Breastpump & Valve. Not Original Lansinoh Pump Parts. Replace Lansinoh Flange ComfortFit. Work with Lansinoh SignaturePro SmartPump Manual Pumps](https://m.media-amazon.com/images/I/31bM2aE0vqL.jpg)**Maymom Compatible 17mm Breastshield Flange for Lansinoh Breastpump & Valve. Not Original Lansinoh Pump Parts. Replace Lansinoh Flange ComfortFit. Work with Lansinoh SignaturePro SmartPump Manual Pumps**Maymom**$13.81**4.8★**— 9%**](https://www.amazon.com/dp/B086KTLCS5) [![Lansinoh ComfortFit Breast Pump Flanges Size 21mm 2 Count](https://m.media-amazon.com/images/I/41q5hde2JaL.jpg)**Lansinoh ComfortFit Breast Pump Flanges Size 21mm 2 Count**Lansinoh**$7.75**4.6★**— 3%**](https://www.amazon.com/dp/B093G3TRSW)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 70 weeks — -9.1% search growth over the last 90 days.

1K750Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

No pronounced peak months · busiest ÷ quietest = 1.4×

## **Reviews**

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

### **What buyers love **

**Size-Overall**32%

*“The sizing was accurate”*

**Quality-Overall**16%

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

**Comfort-Overall**11%

*“So comfortable”*

**Value For Money**7%

*“Great price”*

**Ease Of Use**7%

*“Easy to use”*

**Ease Of Cleaning**6%

*“The little cleaning sponge is wonderful”*

**Breastfeeding Friendly**4%

*“Very helpful and useful for breastfeeding”*

**Durability**3%

*“Durable, comfortable”*

**Advertised Vs Actual Product**3%

*“It performs exactly as intended”*

**Compatibility-Overall**2%

*“Compatible with Frida Mom manual pump”*

### **What buyers complain about **

**Size-Overall**34%

*“These are huge”*

**Quality-Overall**9%

*“Poor quality”*

**Durability**7%

*“one of the flange inserts tore right apart immediately after opening”*

**Comfort-Overall**6%

*“Very uncomfortable”*

**Compatibility-Overall**5%

*“Incompatible with Elvie Stride”*

**Value For Money**4%

*“Waste of money”*

**Functionality-Overall**3%

*“Doesnt work for me”*

**Ease Of Cleaning**3%

*“Why did these come dirty”*

**Product Condition**3%

*“Recieved used product. Hair and lint”*

**Defective Material/Parts**3%

*“Horrible product, pieces missing, and some pieces broken”*

### **Top return reasons **

**Size-Overall**56%

**Functionality-Overall**8%

**Advertised Vs Actual Product**6%

**Defective Material/Parts**5%

**Material Quality**4%

**Comfort-Overall**3%

**Breastfeeding Friendly**3%

**Value For Money**3%

**Compatibility-Overall**2%

**Quality-Overall**2%