---
title: "Lansinoh Flange Inserts — $41K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/lansinoh-flange-inserts"
last_updated: "2026-08-09T19:54:39.046Z"
locale: en
meta:
description: "Niche score 26/100 · $41K/yr market · 55K searches/yr · $9.88 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 26/100 · $41K/yr market · 55K searches/yr · $9.88 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Lansinoh Flange Inserts — $41K/yr Amazon US Niche (2026) - Flapen"
---
# **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 5% 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
According to Flapen's Amazon United States niche tracking, lansinoh flange inserts is a $41K/yr Amazon United States market (55K searches/yr). The top 5 brands hold 97% of demand. Verdict: Skip it — 26/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **lansinoh flange inserts market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$40K–$49K**
- units × avg price
- **Conversion rate**
- **7.6%**
- **Avg BSR**
- **#110**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **34 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
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%**
Top 20: 100%
**Top-5 click share**
**88%**
Top 20: 100%
**Open market**
**0%**
- Lansinoh59% - Nursi Luna16% - Nuliie13% - Luxemum5% - BDICOVE4% - Maymom3%
## **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×
[**Open Trend **](https://flapen.com/research/us/baby-products/lansinoh-flange-inserts/trend)
## **Top lansinoh flange inserts search terms**
- **lansinoh flange inserts**18K/yr-6.0%5.8% conv. - **lansinoh flange**12K/yr-6.8%5.2% conv. - **lansinoh flanges**4K/yr+35.7%5.6% conv. - **flange inserts for lansinoh pump**5K/yr-33.7%5.1% conv. - **lansinoh manual breast pump flange**4K/yr+3.0%8.8% conv. - **lansinoh breast pump flange**4K/yr-23.0%6.2% conv. - **lansinoh pump flange**3K/yr-8.3%6.3% conv. - **lansinoh discreet duo flange inserts**4K/yr-20.5%6.2% conv. - **lansinoh 21mm flange**1K/yr-17.3%25.1% conv. - **lansinoh flange 21mm**1K/yr-51.0%26.6% conv. [**All search terms **](https://flapen.com/research/us/baby-products/lansinoh-flange-inserts/search-terms)
## **Top lansinoh 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%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**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**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**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**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**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**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**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**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**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**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**BDICOVE**$7.90**4.5★**▲ 64%**](https://www.amazon.com/dp/B0DS6YWTCF) [**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**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**Maymom**$13.81**4.8★**— 9%**](https://www.amazon.com/dp/B086KTLCS5) [**Lansinoh ComfortFit Breast Pump Flanges Size 21mm 2 Count**Lansinoh**$7.75**4.6★**— 3%**](https://www.amazon.com/dp/B093G3TRSW)
**~~View all trending →~~**
## **What buyers say about lansinoh flange inserts**
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%
## **Common questions**
- **Is lansinoh flange inserts profitable to sell on Amazon United States?**
- The niche generates $41K/yr across 8 tracked products. 90-day search growth is -9.1%. Flapen's verdict: Skip it (26/100).
- **How competitive is the lansinoh flange inserts niche?**
- 6 brands and 10 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 97% of demand.
- **What do buyers complain about in lansinoh flange inserts?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 3.1%.
- **When does demand for lansinoh flange inserts peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the lansinoh flange inserts niche?**
- Listings span $7.75–$13.81; the average listing price is $9.88 (sweet spot $15–$100). The average incumbent carries 2,151 reviews — the moat a new listing must climb.
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