---
title: "15mm flange spectra — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/15mm-flange-spectra"
last_updated: "2026-07-14T07:29:30.947Z"
locale: en
meta:
  description: "brand-locked demand (top 5 brands take 95% of clicks) — 15mm flange spectra doesn't clear our bar today."
  "og:description": "brand-locked demand (top 5 brands take 95% of clicks) — 15mm flange spectra doesn't clear our bar today."
  "og:title": "15mm flange spectra — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
---

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# **15mm flange spectra**

**Skip it**

Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.

Market size 35Growth 22Conversion 99Competition 21Returns 27Price range 72Avg price 77Brand share 13Review moat 29Quality gap 45

**Conversion**

**Incredible****17.8%**

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

**Avg price**

**Great****$15.74**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$8.24–$32.48**

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

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$167K**

$167K/yr · 59K searches

**Review moat**

**Okay****3,627**

avg incumbent reviews — the moat a new listing must climb

**Returns**

**Okay****5.7%**

return rate — above 6% kills the launch gate

**Growth**

**Bad****-6.1%**

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

**Competition**

**Bad****75%**

top-5 click share — a locked-up shelf

**Brand share**

**Bad****95%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.

**Brands**

**7 **▲rising

**Sellers**

**9**

**Top-5 brand share**

**95%**

**Open market**

**3%**

- Maymom62% - Momstouch17% - NENESUPPLY8% - Suniceme5% - IVARONAL4% - CubCare3% - Open — no brand owns it (1 brand, 3%)

## **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%10%$17K20%$33K30%$50K40%$67K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 12 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Maymom 15mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra Pump Parts Replace Spectra S2 Pump Parts Spectra Flange Spectra Duckbill Valve](https://m.media-amazon.com/images/I/31XaxdD-v-L.jpg)**Maymom 15mm Flange and Duckbill Valve Compatible with Spectra S1 Spectra S2 Spectra 9 Plus Not Original Spectra Pump Parts Replace Spectra S2 Pump Parts Spectra Flange Spectra Duckbill Valve**Maymom**$19.68**4.6★6,022 rev](https://www.amazon.com/dp/B0BLCW8SVC) [2![Momstouch 15mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.](https://m.media-amazon.com/images/I/41DLuXLjxCL.jpg)**Momstouch 15mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.**Momstouch**$16.71**4.3★592 rev](https://www.amazon.com/dp/B0CKQ9B289) [3![Maymom 15mm Wide Neck Pump Part for Spectra S1/S2 Pumps; Compatible with Syngergy Gold Motif Luna Pumps; Incl Wide Mouth Flange; Not Original Spectra Flange; Replaces Spectra Shield](https://m.media-amazon.com/images/I/41S+WXQvLjL.jpg)**Maymom 15mm Wide Neck Pump Part for Spectra S1/S2 Pumps; Compatible with Syngergy Gold Motif Luna Pumps; Incl Wide Mouth Flange; Not Original Spectra Flange; Replaces Spectra Shield**Maymom**$17.16**4.7★7,932 rev](https://www.amazon.com/dp/B0BJZJ2R61) [4![Nenesupply 15mm 2 pc Flanges Compatible with Spectra S2 S1 9 Plus Synergy Gold Breastpump Replacement to Spectra Pump Parts Flange Accessories Wide Mouth Work with Valve Backflow Protector Bottle](https://m.media-amazon.com/images/I/41Cd4Kd5F2L.jpg)**Nenesupply 15mm 2 pc Flanges Compatible with Spectra S2 S1 9 Plus Synergy Gold Breastpump Replacement to Spectra Pump Parts Flange Accessories Wide Mouth Work with Valve Backflow Protector Bottle**NENESUPPLY**$12.04**4.7★3,324 rev](https://www.amazon.com/dp/B0CP8X7Z5G) [5![15mm Maymom MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs](https://m.media-amazon.com/images/I/31sto4sRtcL.jpg)**15mm Maymom MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs**Maymom**$15.59**4.5★8,889 rev](https://www.amazon.com/dp/B0CCHYBRP7)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Flange Inserts for Spectra Spectra Replacement Pump Parts for S1/S2/9 Plus Not Original Accessories Breast Pump Parts Include 2-Pack 15MM Flange and 4-Pack Duckbill Valves](https://m.media-amazon.com/images/I/41ZPAP275BL.jpg)**Flange Inserts for Spectra Spectra Replacement Pump Parts for S1/S2/9 Plus Not Original Accessories Breast Pump Parts Include 2-Pack 15MM Flange and 4-Pack Duckbill Valves**CubCare**$9.74**119 rev2mo ago](https://www.amazon.com/dp/B0GXRRBPMT) [![BALIME Pump Parts Compatible with Spectra S1/S2/9 Plus 2Pcs Duckbill Valves and 2Pcs 15mm Flange (Not Original Spectra Accessories)](https://m.media-amazon.com/images/I/41NBX55LIeL.jpg)**BALIME Pump Parts Compatible with Spectra S1/S2/9 Plus 2Pcs Duckbill Valves and 2Pcs 15mm Flange (Not Original Spectra Accessories)**BALIME**$10.10**129 rev11mo ago](https://www.amazon.com/dp/B0FK25THSQ) [![2 Packs 15mm Flange Set Updated Soft Rim Shield and Wide Mouth Base Connector Pump Parts for Spectra S2 Spectra S1 9 Plus Breastpumps Accessories 106 Degree Wider Opening Angel](https://m.media-amazon.com/images/I/414l6YsplTL.jpg)**2 Packs 15mm Flange Set Updated Soft Rim Shield and Wide Mouth Base Connector Pump Parts for Spectra S2 Spectra S1 9 Plus Breastpumps Accessories 106 Degree Wider Opening Angel**IVARONAL**$15.52**170 rev1y ago](https://www.amazon.com/dp/B0F18KLGDH) [![Flange Inserts 15mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges Reduce 24mm Nipple Tunnel Down to 15 mm 4PCS](https://m.media-amazon.com/images/I/310eyt8NFjL.jpg)**Flange Inserts 15mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges Reduce 24mm Nipple Tunnel Down to 15 mm 4PCS**Suniceme**$8.24**971 rev2y ago](https://www.amazon.com/dp/B0CW1P5GRJ) [![Momstouch 15mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.](https://m.media-amazon.com/images/I/41DLuXLjxCL.jpg)**Momstouch 15mm Flange and Duckbill Valve Compatible with Spectra S1 S2 9 Plus Breastpump Replacement to Spectra Pump Parts Not Original Replace Accessories.**Momstouch**$16.71**592 rev2y ago](https://www.amazon.com/dp/B0CKQ9B289)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Flange Inserts for Spectra Spectra Replacement Pump Parts for S1/S2/9 Plus Not Original Accessories Breast Pump Parts Include 2-Pack 15MM Flange and 4-Pack Duckbill Valves](https://m.media-amazon.com/images/I/41ZPAP275BL.jpg)**Flange Inserts for Spectra Spectra Replacement Pump Parts for S1/S2/9 Plus Not Original Accessories Breast Pump Parts Include 2-Pack 15MM Flange and 4-Pack Duckbill Valves**CubCare**$9.74**4.4★**▲ 262%**](https://www.amazon.com/dp/B0GXRRBPMT) [![15mm Maymom MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs](https://m.media-amazon.com/images/I/31sto4sRtcL.jpg)**15mm Maymom MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs**Maymom**$15.59**4.5★**▲ 76%**](https://www.amazon.com/dp/B0CCHYBRP7) [![Maymom 15mm Wide Neck Pump Part for Spectra S1/S2 Pumps; Compatible with Syngergy Gold Motif Luna Pumps; Incl Wide Mouth Flange; Not Original Spectra Flange; Replaces Spectra Shield](https://m.media-amazon.com/images/I/41S+WXQvLjL.jpg)**Maymom 15mm Wide Neck Pump Part for Spectra S1/S2 Pumps; Compatible with Syngergy Gold Motif Luna Pumps; Incl Wide Mouth Flange; Not Original Spectra Flange; Replaces Spectra Shield**Maymom**$17.16**4.7★**▲ 57%**](https://www.amazon.com/dp/B0BJZJ2R61) [![2 Packs 15mm Flange Set Updated Soft Rim Shield and Wide Mouth Base Connector Pump Parts for Spectra S2 Spectra S1 9 Plus Breastpumps Accessories 106 Degree Wider Opening Angel](https://m.media-amazon.com/images/I/414l6YsplTL.jpg)**2 Packs 15mm Flange Set Updated Soft Rim Shield and Wide Mouth Base Connector Pump Parts for Spectra S2 Spectra S1 9 Plus Breastpumps Accessories 106 Degree Wider Opening Angel**IVARONAL**$15.52**3.9★**▲ 54%**](https://www.amazon.com/dp/B0F18KLGDH) [![BALIME Pump Parts Compatible with Spectra S1/S2/9 Plus 2Pcs Duckbill Valves and 2Pcs 15mm Flange (Not Original Spectra Accessories)](https://m.media-amazon.com/images/I/41NBX55LIeL.jpg)**BALIME Pump Parts Compatible with Spectra S1/S2/9 Plus 2Pcs Duckbill Valves and 2Pcs 15mm Flange (Not Original Spectra Accessories)**BALIME**$10.10**4.4★**▲ 43%**](https://www.amazon.com/dp/B0FK25THSQ)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -6.1% search growth over the last 90 days.

2K1KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

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

### **What buyers love **

**Size-Overall**46%

*“Fits spectra”*

**Comfort-Overall**14%

*“Comfortable”*

**Ease Of Cleaning**11%

*“easy to clean”*

**Ease Of Use**6%

*“omg these made it so much easier”*

**Advertised Vs Actual Product**4%

*“Just what I needed”*

**Durability**2%

*“These are durable”*

**Compatibility-Overall**2%

*“it is compatible”*

**Quality-Overall**2%

*“Great quality”*

**Breastfeeding Friendly**2%

*“Helps my milk production”*

### **What buyers complain about **

**Size-Overall**19%

*“the backflow pieces do not fit”*

**Functionality-Overall**15%

*“they did not work great”*

**Quality-Overall**12%

*“Not well made”*

**Washability**8%

*“constant hot water washes”*

**Leak-Proof**8%

*“If they dont seal *just right* then you end up with a silent leak”*

**Ease Of Cleaning**4%

*“It is very hard to clean”*

**Locking Mechanism**4%

*“do not lock in place or stay screwed on”*

**Durability**4%

*“Both rims broke off the flange within a few weeks”*

**Advertised Vs Actual Product**4%

*“The description says that its supportive of spectra pumps but the backflow pieces do not fit!!”*

**Value For Money**4%

*“It has almost cost me my milk supply”*

### **Top return reasons **

**Size-Overall**80%

**Width**4%

**Functionality-Overall**4%

**Advertised Vs Actual Product**3%

**Defective Material/Parts**2%

**Compatibility-Overall**1%

**Breastfeeding Friendly**1%

**Value For Money**1%

**Product Condition**1%

**Material Quality**1%