---
title: "Flange Inserts for Breast Pump — £64K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/baby-products/flange-inserts-for-breast-pump"
last_updated: "2026-08-07T21:12:20.080Z"
locale: en
meta:
description: "Niche score 41/100 · £64K/yr market · 74K searches/yr · £8.22 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 41/100 · £64K/yr market · 74K searches/yr · £8.22 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Flange Inserts for Breast Pump — £64K/yr Amazon UK Niche (2026) - Flapen"
---
# **flange inserts for breast pump**
**Skip it**
Prices mostly outside the sweet spot ($3.38–$12.17) — this niche doesn't clear our bar today.
Market size 16Growth 19Conversion 89Competition 21Returns 100Price range 0Avg price 23Brand share 35Review moat 66Quality gap 53
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****849.5**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****£8.22**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-11.2%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£64K**
£64K/yr · 74K searches
**Price range**
**Bad****£3.38–£12.17**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, flange inserts for breast pump is a £64K/yr Amazon United Kingdom market (74K searches/yr). The top 5 brands hold 84% of demand. Verdict: Skip it — 41/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **flange inserts for breast pump market data**
- **Units sold / yr**
- **6K–8K**
- avg 250–500/product
- **Revenue / yr**
- **£49K–£66K**
- units × avg price
- **Conversion rate**
- **10.5%**
- **Avg BSR**
- **#67**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **93%**
- **Out of stock**
- **3.3%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **216 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**10 **▲rising
**Sellers**
**12**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**12%**
- RAMXCION29% - Nuliie26% - Nursi Luna18% - EOAMGO6% - semai5% - BALIME4% - Open — no brand owns it (4 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 53 weeks — -11.2% search growth over the last 90 days.
2K2KBlack Friday '25 seasonJulAugSepOctNovDecJanFebMarAprMayJun
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/uk/baby-products/flange-inserts-for-breast-pump/trend)
## **Top flange inserts for breast pump search terms**
- **flange inserts for breast pump**30K/yr-11.7%9.7% conv. - **breast pump flange insert**11K/yr-14.3%10.5% conv. - **flange sizing kit**8K/yr-8.9%9.7% conv. - **flange**5K/yr+6.1%2.7% conv. - **spectra flange inserts**3K/yr-11.0%10.2% conv. - **momcozy flange insert**5K/yr-13.1%7.0% conv. - **flanges**3K/yr-2.5%2.8% conv. - **flange inserts for breast pump medela**3K/yr+1.0%10.3% conv. - **breast pump flange**3K/yr-31.6%6.4% conv. - **flange inserts**3K/yr-14.5%6.9% conv. [**All search terms **](https://flapen.com/research/uk/baby-products/flange-inserts-for-breast-pump/search-terms)
## **Top flange inserts for breast pump 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%£6K20%£13K30%£19K40%£26K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nuliie 10PCS Flange Inserts 13/15/17/19/21mm for 24mm Flange/Shield of Most Pumps BPA Free Inserts Compatible with Momcozy/Spectra/Bellababy/TSRETE/Nuliie Breast Pumps**Nuliie**£8.42**4.3★3,858 rev](https://www.amazon.co.uk/dp/B0CMPBBHMZ) [2**RAMXCION Nipple Rulers with 10PCS Flange Inserts 13/15/17/19/21mm Compatible with 24mm Flanges/Shield of Most Breast Pumps Silicone Flange Sizing Breast Pumps Accessories for New Moms (Transparent)**RAMXCION**£7.84**4.5★1,313 rev](https://www.amazon.co.uk/dp/B0F9PNR8NR) [3**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**£8.61**4.4★1,895 rev](https://www.amazon.co.uk/dp/B0CKZH37FX) [4**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**£8.91**4.6★1,936 rev](https://www.amazon.co.uk/dp/B0CY81WHD5) [5**Breast Pump Flange Inserts Set 10pcs Replacement Silicone Cushions in 5 Sizes + Cleaning Brush & Ruler Soft BPA-Free Compatible Pump Parts for Better Fit & Comfort (13/15/17/19/21mm)**EOAMGO**£7.70**4.2★37 rev](https://www.amazon.co.uk/dp/B0FDJNX4Z9)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Flange Inserts 13/15/17/19/21mm for 24mm Flange/Shield of Most Breast Pump 3-in-1 Breast Cooling Gel Pads & Nipple Rulers - BPA Free Flange Sizing Kit for New Moms (Flange Inserts+Gel Pads)**RAMXCION**£9.45**14 rev7mo ago](https://www.amazon.co.uk/dp/B0G64VS8BW) [**Nipple Rulers & 10PCS Breast Pump Flange Inserts 13/15/17/19/21mm Compatible with 24mm Flanges/Shield of Most Breast Pumps 2PCS 3-in-1 Hot and Cold Breast Gel Pads Flange Sizing Kit - BPA Free**RAMXCION**£10.54**348 rev8mo ago](https://www.amazon.co.uk/dp/B0FYPF19PW) [**Momcozy Breast Pump Flange Insert 15mm Only for Momcozy M5/M6/M9 4PC**momcozy**£12.17**348 rev1y ago](https://www.amazon.co.uk/dp/B0FGJ778W3) [**Breast Pump Flange Inserts Set 10pcs Replacement Silicone Cushions in 5 Sizes + Cleaning Brush & Ruler Soft BPA-Free Compatible Pump Parts for Better Fit & Comfort (13/15/17/19/21mm)**EOAMGO**£7.70**37 rev1y ago](https://www.amazon.co.uk/dp/B0FDJNX4Z9) [**RAMXCION Nipple Rulers with 10PCS Flange Inserts 13/15/17/19/21mm Compatible with 24mm Flanges/Shield of Most Breast Pumps Silicone Flange Sizing Breast Pumps Accessories for New Moms (Transparent)**RAMXCION**£7.84**1,313 rev1y ago](https://www.amazon.co.uk/dp/B0F9PNR8NR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nipple Rulers & 10PCS Breast Pump Flange Inserts 13/15/17/19/21mm Compatible with 24mm Flanges/Shield of Most Breast Pumps 2PCS 3-in-1 Hot and Cold Breast Gel Pads Flange Sizing Kit - BPA Free**RAMXCION**£10.54**4.7★**▲ 277%**](https://www.amazon.co.uk/dp/B0FYPF19PW) [**BALIME Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flange/Shields of All Breast Pump Nipple Measurement Card Compatible with Medela Elvie Momcozy Spectra Jheppbay Bellababy**BALIME**£7.84**4.5★**▲ 48%**](https://www.amazon.co.uk/dp/B0D93T73G3) [**semai Flange Inserts 13/15/17/19/21mm Compatible with Medela/Momcozy S12 Pro/S9 Pro/S12/S9/Spectra/Elvie 24mm Breast Pump Flanges Reduce 24mm Nipple Tunnel Down to Correct Size 5PCS (NOT 5 Pairs)**semai**£7.54**4.4★**▲ 38%**](https://www.amazon.co.uk/dp/B0C6DTBCTK) [**Momcozy Breast Pump Flange Insert 15mm Only for Momcozy M5/M6/M9 4PC**momcozy**£12.17**4.2★**▲ 33%**](https://www.amazon.co.uk/dp/B0FGJ778W3) [**Breast Pump Flange Inserts Set 10pcs Replacement Silicone Cushions in 5 Sizes + Cleaning Brush & Ruler Soft BPA-Free Compatible Pump Parts for Better Fit & Comfort (13/15/17/19/21mm)**EOAMGO**£7.70**4.2★**▲ 27%**](https://www.amazon.co.uk/dp/B0FDJNX4Z9)
**~~View all trending →~~**
## **What buyers say about flange inserts for breast pump**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**26%
*“they fit great”*
**Ease Of Use**12%
*“EASY TO USE”*
**Breastfeeding Friendly**11%
*“Amazing for breast pumps”*
**Quality-Overall**10%
*“Good quality flanges with nipple sizing guide”*
**Comfort-Overall**8%
*“I'm more comfortable”*
**Compatibility-Overall**5%
*“Compatible with momcozy s12 pro”*
**Advertised Vs Actual Product**5%
*“Did the job”*
**Ease Of Cleaning**4%
*“The cleaning sponge also makes it easy to clean”*
**Value For Money**4%
*“so much cheaper than the original”*
**Adjustability/Rotatability/Reclining**3%
*“the adjustable as you feel fits best”*
### **What buyers complain about **
**Size-Overall**23%
*“Unfortunately, it doesnt fit Elvie 24 mm breast pumps as advertised”*
**Compatibility-Overall**10%
*“however it is not compatible with my spectra S1”*
**Functionality-Overall**6%
*“Didn't work for me”*
**Comfort-Overall**6%
*“Very uncomfortable”*
**Measurement/Reading Accuracy**6%
*“then measured me incorrectly - that caused excessive pain”*
**Value For Money**3%
*“Cheaper that some other options”*
## **Common questions**
- **Is flange inserts for breast pump profitable to sell on Amazon United Kingdom?**
- The niche generates £64K/yr across 14 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -11.2%. Flapen's verdict: Skip it (41/100).
- **How competitive is the flange inserts for breast pump niche?**
- 10 brands and 12 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in flange inserts for breast pump?**
- Top complaints mined from reviews: Size-Overall, Compatibility-Overall, Functionality-Overall. The return rate is 0.0%.
- **When does demand for flange inserts for breast pump peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the flange inserts for breast pump niche?**
- Listings span £3.38–£12.17; the average listing price is £8.22 (sweet spot $15–$100). The average incumbent carries 850 reviews — the moat a new listing must climb.
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