---
title: "Flange Size Measure for Nipples — $149K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/flange-size-measure-for-nipples"
last_updated: "2026-08-09T17:59:35.682Z"
locale: en
meta:
description: "Niche score 29/100 · $149K/yr market · 153K searches/yr · $7.72 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 29/100 · $149K/yr market · 153K searches/yr · $7.72 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Flange Size Measure for Nipples — $149K/yr Amazon US Niche (2026) - Flapen"
---
# **flange size measure for nipples**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 32Growth 23Conversion 95Competition 3Returns 48Price range 0Avg price 21Brand share 0Review moat 48Quality gap 27
**Conversion**
**Incredible****12.7%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Okay****1,699.14**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.2%**
return rate — above 5% kills the launch gate
**Market size**
**Okay****$149K**
$149K/yr · 153K searches
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-3.5%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****$7.72**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****96%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****$4.00–$10.05**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, flange size measure for nipples is a $149K/yr Amazon United States market (153K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 29/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **flange size measure for nipples market data**
- **Units sold / yr**
- **20K–25K**
- avg 2,500–3,000/product
- **Revenue / yr**
- **$154K–$193K**
- units × avg price
- **Conversion rate**
- **12.7%**
- **Avg BSR**
- **#57**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **57%**
- **Out of stock**
- **15.4%**
- **Avg brand age**
- **34 months**
- **Avg seller age**
- **161 days**
## **Competition & brand share**
The top 5 products capture 96% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **—flat
**Sellers**
**9**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**96%**
Top 20: 100%
**Open market**
**0%**
- Nursi Luna42% - Momcozy25% - Luxemum20% - Nuliie11% - Munchkin2%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.5% search growth over the last 90 days.
4K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/us/baby-products/flange-size-measure-for-nipples/trend)
## **Top flange size measure for nipples search terms**
- **nipple measurement tool for flanges**42K/yr+2.8%12.2% conv. - **nipple sizer for flanges**34K/yr-11.3%12.1% conv. - **nipple ruler**14K/yr-18.7%10.0% conv. - **nipple measuring tool**11K/yr+12.0%10.6% conv. - **nipple sizer**6K/yr+51.2%11.2% conv. - **nursi luna flange sizing kit**11K/yr-21.1%17.6% conv. - **flange measuring tool**8K/yr-3.6%12.3% conv. - **nipple ruler for flange sizing**3K/yr+425.7%14.0% conv. - **flange sizer**4K/yr+14.8%15.7% conv. - **flange sizing**6K/yr-38.5%10.5% conv. [**All search terms **](https://flapen.com/research/us/baby-products/flange-size-measure-for-nipples/search-terms)
## **Top flange size measure for nipples 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%10%$15K20%$30K30%$45K40%$60K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 7 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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) [2**Momcozy Nipple Ruler for Flange Sizing Soft & Flexible Silicone Measurement Tool for Breast Pump Sizing Compatible with Momcozy Medela Spectra Lansinoh Easy to Use for Comfortable Pumping**Momcozy**$5.68**4.3★2,611 rev](https://www.amazon.com/dp/B0CBT9ZJ9T) [3**Luxemum Nipple Rulers Flange Inserts Sizing Measurement Tool for Breast Pump Soft Silicone Flange Size Measure Nipple Measuring for New Mums/Women**Luxemum**$4.00**4.8★555 rev](https://www.amazon.com/dp/B0CSRZS8NV) [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**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)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Munchkin Nipple Ruler Sizing Tool for Nipple Shields and Breast Pump Flanges Helps Breastfeeding Moms Buy The Right Size**Munchkin**$4.92**81 rev1y ago](https://www.amazon.com/dp/B0F1XG3JYR) [**Nursi Luna Flange Sizing Kit with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for Enhanced Pumping Comfort BPA-Free Pump Essential for Moms**Nursi Luna**$9.86**381 rev1y ago](https://www.amazon.com/dp/B0DT3QZ6Q2) [**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) [**Luxemum Nipple Rulers Flange Inserts Sizing Measurement Tool for Breast Pump Soft Silicone Flange Size Measure Nipple Measuring for New Mums/Women**Luxemum**$4.00**555 rev2y ago](https://www.amazon.com/dp/B0CSRZS8NV) [**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)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Momcozy Nipple Ruler for Flange Sizing Soft & Flexible Silicone Measurement Tool for Breast Pump Sizing Compatible with Momcozy Medela Spectra Lansinoh Easy to Use for Comfortable Pumping**Momcozy**$5.68**4.3★**▲ 39%**](https://www.amazon.com/dp/B0CBT9ZJ9T) [**Munchkin Nipple Ruler Sizing Tool for Nipple Shields and Breast Pump Flanges Helps Breastfeeding Moms Buy The Right Size**Munchkin**$4.92**4.6★**▲ 38%**](https://www.amazon.com/dp/B0F1XG3JYR) [**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★**▲ 17%**](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**Nursi Luna**$10.05**4.6★**▲ 14%**](https://www.amazon.com/dp/B0CKZH37FX) [**Luxemum Nipple Rulers Flange Inserts Sizing Measurement Tool for Breast Pump Soft Silicone Flange Size Measure Nipple Measuring for New Mums/Women**Luxemum**$4.00**4.8★**▼ 21%**](https://www.amazon.com/dp/B0CSRZS8NV)
**~~View all trending →~~**
## **What buyers say about flange size measure for nipples**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**27%
*“The sizing is also accurate”*
**Ease Of Use**12%
*“The kit was somewhat easy to use for the most part”*
**Quality-Overall**12%
*“Great Quality”*
**Value For Money**9%
*“Great price”*
**Comfort-Overall**8%
*“So comfortable”*
**Ease Of Cleaning**6%
*“The little cleaning sponge is wonderful”*
**Advertised Vs Actual Product**5%
*“Exactly What I Needed”*
**Durability**4%
*“feels very durable”*
**Breastfeeding Friendly**4%
*“Very helpful and useful for breastfeeding”*
**Compatibility-Overall**2%
*“Compatible with Frida Mom manual pump”*
### **What buyers complain about **
**Size-Overall**30%
*“These are huge”*
**Quality-Overall**7%
*“Poor quality”*
**Value For Money**5%
*“It feels a bit pricey for something youll only use a few times”*
**Comfort-Overall**5%
*“Very uncomfortable”*
**Durability**4%
*“one of the flange inserts tore right apart immediately after opening”*
**Compatibility-Overall**4%
*“Incompatible with Elvie Stride”*
**Ease Of Cleaning**4%
*“they are kind of a pain to insert and clean and the output isnt as good as just using the correct size pump accessory”*
**Ease Of Use**3%
*“its a little awkward to handle at first”*
**Material Quality**3%
*“These are different the last time I bought them I dont like the material”*
**Functionality-Overall**2%
*“Doesnt work for me”*
### **Top return reasons **
**Size-Overall**54%
**Functionality-Overall**9%
**Advertised Vs Actual Product**7%
**Defective Material/Parts**5%
**Material Quality**4%
**Value For Money**3%
**Breastfeeding Friendly**3%
**Comfort-Overall**3%
**Compatibility-Overall**2%
**Quality-Overall**2%
## **Common questions**
- **Is flange size measure for nipples profitable to sell on Amazon United States?**
- The niche generates $149K/yr across 7 tracked products. 90-day search growth is -3.5%. Flapen's verdict: Skip it (29/100).
- **How competitive is the flange size measure for nipples niche?**
- 5 brands and 9 sellers compete. The top 5 products take 96% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in flange size measure for nipples?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Value For Money. The return rate is 3.2%.
- **When does demand for flange size measure for nipples peak?**
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- **What does it cost to enter the flange size measure for nipples niche?**
- Listings span $4.00–$10.05; the average listing price is $7.72 (sweet spot $15–$100). The average incumbent carries 1,699 reviews — the moat a new listing must climb.
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