---
title: "elvie stride flange inserts — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/baby-products/elvie-stride-flange-inserts"
last_updated: "2026-07-13T22:26:48.304Z"
locale: en
meta:
  description: "brand-locked demand (top 5 brands take 96% of clicks) — elvie stride flange inserts doesn't clear our bar today."
  "og:description": "brand-locked demand (top 5 brands take 96% of clicks) — elvie stride flange inserts doesn't clear our bar today."
  "og:title": "elvie stride flange inserts — Niche Verdict: Skip it (42/100) | Amazon United States - Flapen"
---

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# **elvie stride flange inserts**

**Skip it**

Brand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.

Market size 40Growth 17Conversion 80Competition 35Returns 40Price range 77Avg price 84Brand share 11Review moat 25Quality gap 60

**Avg price**

**Great****$18.57**

avg listing price — sweet spot $15–$100

**Conversion**

**Great****8.3%**

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

**Price range**

**Great****$9.68–$33.45**

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

**Quality gap**

**Good****4.4★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$203K**

$203K/yr · 131K searches

**Returns**

**Okay****4.2%**

return rate — above 6% kills the launch gate

**Competition**

**Okay****64%**

top-5 click share — leaders hold, buyers still browse

**Review moat**

**Bad****4,121**

avg incumbent reviews — the moat a new listing must climb

**Growth**

**Bad****-15.0%**

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

**Brand share**

**Bad****96%**

top-5 brand share — brand-locked demand

## **Competition**

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**7 **▼falling

**Sellers**

**17**

**Top-5 brand share**

**96%**

**Open market**

**2%**

- Elvie69% - TB Tbuymax17% - Maymom4% - MilkFlow3% - IVARONAL3% - Nursi Luna3% - Open — no brand owns it (1 brand, 2%)

## **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%5%$10K10%$20K15%$30K20%$41K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

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

All 17 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![Elvie - Breast Pump Valve and Spout Kit - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack](https://m.media-amazon.com/images/I/31MgBeYHVKL.jpg)**Elvie - Breast Pump Valve and Spout Kit - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack**Elvie**$14.42**4.3★11,213 rev](https://www.amazon.com/dp/B07G3DM82C) [2![TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts](https://m.media-amazon.com/images/I/417ZrB3Td3L.jpg)**TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts**TB Tbuymax**$18.17**4.6★175 rev](https://www.amazon.com/dp/B0DLB11G24) [3![Elvie Pump - Breastmilk Storage Bottles - BPA Free - Breast Feeding Essentials - 3 Pack](https://m.media-amazon.com/images/I/21iZmoB3TwL.jpg)**Elvie Pump - Breastmilk Storage Bottles - BPA Free - Breast Feeding Essentials - 3 Pack**Elvie**$33.45**4.8★894 rev](https://www.amazon.com/dp/B07G3FSCKC) [4![Elvie Breast Pump Breast Shield - 21mm - Nipple Flange for Pumping Breast Milk - Accessories & Breastfeeding Essentials for Electric Pumps - BPA Free Dishwasher Safe - 2 Pack](https://m.media-amazon.com/images/I/31SlF46rg3L.jpg)**Elvie Breast Pump Breast Shield - 21mm - Nipple Flange for Pumping Breast Milk - Accessories & Breastfeeding Essentials for Electric Pumps - BPA Free Dishwasher Safe - 2 Pack**Elvie**$23.58**4.3★11,213 rev](https://www.amazon.com/dp/B07G3CM314) [5![Elvie - Breast Pump Seals - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack](https://m.media-amazon.com/images/I/31fEpt7uumL.jpg)**Elvie - Breast Pump Seals - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack**Elvie**$16.39**4.3★11,213 rev](https://www.amazon.com/dp/B07G3DPMKJ)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![Replacement Parts 6 Duckbill Valves & 4 Pump Seals Diaphragm with Storage Case Compatible with Elvie Breast Pump Parts BPA Free Elvie Pump Accessories Wearable Breast Pump Replacement Parts Kit](https://m.media-amazon.com/images/I/41iahqKyVPL.jpg)**Replacement Parts 6 Duckbill Valves & 4 Pump Seals Diaphragm with Storage Case Compatible with Elvie Breast Pump Parts BPA Free Elvie Pump Accessories Wearable Breast Pump Replacement Parts Kit**MilkFlow**$20.06**9 rev5mo ago](https://www.amazon.com/dp/B0GLR4HJNJ) [![2pcs Duckbill Valves and 2pcs Pump Seals Diaphragm Compatible with Elvie Breast Pump Replace for Elvie Pump Valves and Diaphragm Pump Seal Used for Original Flange Not Original Parts](https://m.media-amazon.com/images/I/41uvvBC83YL.jpg)**2pcs Duckbill Valves and 2pcs Pump Seals Diaphragm Compatible with Elvie Breast Pump Replace for Elvie Pump Valves and Diaphragm Pump Seal Used for Original Flange Not Original Parts**IVARONAL**$9.99**62 rev11mo ago](https://www.amazon.com/dp/B0FLJ34TGT) [![TB Tbuymax 2pc Diaphragm and 6pc Duckbill Valves Compatible with Elvie Stride Breast Pump Parts Replace for Elvie Stride Pump Not Original Pump Seals Membrane Accessories](https://m.media-amazon.com/images/I/41Wj2EodWJL.jpg)**TB Tbuymax 2pc Diaphragm and 6pc Duckbill Valves Compatible with Elvie Stride Breast Pump Parts Replace for Elvie Stride Pump Not Original Pump Seals Membrane Accessories**TB Tbuymax**$18.20**177 rev1y ago](https://www.amazon.com/dp/B0FF33L561) [![TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts](https://m.media-amazon.com/images/I/417ZrB3Td3L.jpg)**TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts**TB Tbuymax**$18.17**175 rev1y ago](https://www.amazon.com/dp/B0DLB11G24) [![Maymom 16mm Flange Insert Compatible with Elvie Single/Double Electric Elvie Stride 24mm Wearable Cup Not Original Elvie Stride Replacement Pump Parts](https://m.media-amazon.com/images/I/215A6mdtoOL.jpg)**Maymom 16mm Flange Insert Compatible with Elvie Single/Double Electric Elvie Stride 24mm Wearable Cup Not Original Elvie Stride Replacement Pump Parts**Maymom**$14.59**3,517 rev2y ago](https://www.amazon.com/dp/B0CS3M6B6D)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![Replacement Parts 6 Duckbill Valves & 4 Pump Seals Diaphragm with Storage Case Compatible with Elvie Breast Pump Parts BPA Free Elvie Pump Accessories Wearable Breast Pump Replacement Parts Kit](https://m.media-amazon.com/images/I/41iahqKyVPL.jpg)**Replacement Parts 6 Duckbill Valves & 4 Pump Seals Diaphragm with Storage Case Compatible with Elvie Breast Pump Parts BPA Free Elvie Pump Accessories Wearable Breast Pump Replacement Parts Kit**MilkFlow**$20.06**4.8★**▲ 357%**](https://www.amazon.com/dp/B0GLR4HJNJ) [![Maymom 16mm Flange Insert Compatible with Elvie Single/Double Electric Elvie Stride 24mm Wearable Cup Not Original Elvie Stride Replacement Pump Parts](https://m.media-amazon.com/images/I/215A6mdtoOL.jpg)**Maymom 16mm Flange Insert Compatible with Elvie Single/Double Electric Elvie Stride 24mm Wearable Cup Not Original Elvie Stride Replacement Pump Parts**Maymom**$14.59**4.5★**▲ 231%**](https://www.amazon.com/dp/B0CS3M6B6D) [![Elvie - Nipple Cushions - 15mm - Soft Silicone to Enhance fit for Improved Comfort and Efficiency - Accessories & Breastfeeding Essentials - BPA Free Dishwasher Safe - 2 Count](https://m.media-amazon.com/images/I/31JgQ9djzzL.jpg)**Elvie - Nipple Cushions - 15mm - Soft Silicone to Enhance fit for Improved Comfort and Efficiency - Accessories & Breastfeeding Essentials - BPA Free Dishwasher Safe - 2 Count**Elvie**$18.61**4.2★**▲ 196%**](https://www.amazon.com/dp/B0C7FFQSTV) [![Elvie - Breast Pump Valve and Spout Kit - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack](https://m.media-amazon.com/images/I/31MgBeYHVKL.jpg)**Elvie - Breast Pump Valve and Spout Kit - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack**Elvie**$14.42**4.3★**▲ 72%**](https://www.amazon.com/dp/B07G3DM82C) [![TB Tbuymax 2pc Diaphragm and 6pc Duckbill Valves Compatible with Elvie Stride Breast Pump Parts Replace for Elvie Stride Pump Not Original Pump Seals Membrane Accessories](https://m.media-amazon.com/images/I/41Wj2EodWJL.jpg)**TB Tbuymax 2pc Diaphragm and 6pc Duckbill Valves Compatible with Elvie Stride Breast Pump Parts Replace for Elvie Stride Pump Not Original Pump Seals Membrane Accessories**TB Tbuymax**$18.20**4.6★**▲ 20%**](https://www.amazon.com/dp/B0FF33L561)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 103 weeks — -15.0% search growth over the last 90 days.

3K2KPrime Day '25Spike '26 seasonDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 2.3×

## **Reviews**

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

### **What buyers love **

**Size-Overall**34%

*“The best sizing kit”*

**Quality-Overall**15%

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

**Comfort-Overall**8%

*“Comfortable”*

**Value For Money**8%

*“Great price”*

**Ease Of Cleaning**6%

*“The little cleaning sponge is wonderful”*

**Ease Of Use**5%

*“Easy to use”*

**Advertised Vs Actual Product**5%

*“It performs exactly as intended”*

**Breastfeeding Friendly**4%

*“Very helpful and useful for breastfeeding”*

**Compatibility-Overall**3%

*“Compatible with Frida Mom manual pump”*

**Durability**3%

*“durable”*

### **What buyers complain about **

**Size-Overall**27%

*“These are huge”*

**Functionality-Overall**8%

*“Did not work”*

**Quality-Overall**7%

*“Would expect higher quality control from a company who is knowingly serving pregnant and postpartum women”*

**Durability**7%

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

**Value For Money**5%

*“Expensive for a single pair”*

**Defective Material/Parts**4%

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

**Product Condition**4%

*“Item arrived used”*

**Compatibility-Overall**4%

*“Incompatible with Elvie Stride”*

**Allergies**4%

*“And now its caused an allergic reaction”*

**Ease Of Use**3%

*“Semi-useful”*

### **Top return reasons **

**Size-Overall**54%

**Functionality-Overall**8%

**Advertised Vs Actual Product**6%

**Defective Material/Parts**5%

**Material Quality**3%

**Value For Money**3%

**Comfort-Overall**3%

**Breastfeeding Friendly**3%

**Compatibility-Overall**2%

**Product Condition**2%