Is elvie stride flange inserts profitable to sell on Amazon United States?

The niche generates $203K/yr across 17 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.0%. Flapen's verdict: Skip it (42/100).

How competitive is the elvie stride flange inserts niche?

7 brands and 17 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 96% of demand.

What do buyers complain about in elvie stride flange inserts?

Top complaints mined from reviews: Size-Overall, Functionality-Overall, Quality-Overall. The return rate is 4.2%.

When does demand for elvie stride flange inserts peak?

Demand peaks in Jan–Feb; the busiest month runs 2.3× the quietest.

What does it cost to enter the elvie stride flange inserts niche?

Listings span $9.68–$33.45; the average listing price is $18.57 (sweet spot $15–$100). The average incumbent carries 4,121 reviews — the moat a new listing must climb.

elvie stride flange inserts

Skip it

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

Avg price

Great$18.57

avg listing price — sweet spot $15–$100

Conversion

Great8.3%

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

Good4.4★

avg incumbent rating — lower means beatable quality

Market size

Okay$203K

$203K/yr · 131K searches

Competition

Okay64%

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

Returns

Okay4.2%

return rate — above 5% kills the launch gate

Review moat

Bad4,121

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

Bad96%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, elvie stride flange inserts is a $203K/yr Amazon United States market (131K searches/yr). The top 5 brands hold 96% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 42/100.

Data updated Jul 12, 2026 · scored weekly · How we score niches

elvie stride flange inserts market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: $186K–$232K; units × avg price
Conversion rate: 8.3%
Avg BSR: #121
Page quality: 0%
Prime: 100%
Sponsored: 88%
Out of stock: 4.3%
Avg brand age: 35 months
Avg seller age: 122 days

Competition & brand share

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

Brands

7 falling

Sellers

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

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

Demand & seasonality

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

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

Open Trend

Top elvie stride flange inserts search terms

elvie replacement parts32K/yr -8.4%10.8% conv.
elvie pump parts38K/yr -26.3%7.7% conv.
elvie stride flange inserts13K/yr -7.2%3.8% conv.
elvie pump replacement parts12K/yr -20.2%9.7% conv.
elvie breast pump parts10K/yr -1.6%6.3% conv.
elvie flange inserts6K/yr -25.3%5.5% conv.
elvie breast pump replacement parts5K/yr -22.4%6.1% conv.
elvie bottles3K/yr -31.3%4.1% conv.
elvie parts3K/yr +2.9%8.8% conv.
elvie replacement pump parts3K/yr -8.3%12.2% conv.

All search terms

Top elvie stride 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.

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

Elvie - Breast Pump Valve and Spout Kit - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack

Elvie$14.424.3★11,213 rev

TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts

TB Tbuymax$18.174.6★175 rev

Elvie Pump - Breastmilk Storage Bottles - BPA Free - Breast Feeding Essentials - 3 Pack

Elvie$33.454.8★894 rev

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$23.584.3★11,213 rev

Elvie - Breast Pump Seals - Accessories for Breastmilk Storage Pumps & Breastfeeding Essentials - 2 Pack

Elvie$16.394.3★11,213 rev

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

MilkFlow$20.069 rev

5mo ago

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$9.9962 rev

11mo ago

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$18.20177 rev

1y ago

TB Tbuymax 8pc Duckbill Valves 4pc Pump Seals Diaphragm Compatible with Wearable Elvie Breast Pump and Pump Parts Replacement Membrane Parts

TB Tbuymax$18.17175 rev

1y ago

Maymom 16mm Flange Insert Compatible with Elvie Single/Double Electric Elvie Stride 24mm Wearable Cup Not Original Elvie Stride Replacement Pump Parts

Maymom$14.593,517 rev

2y ago

What buyers say about elvie stride flange inserts

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

What buyers love

Size-Overall34%

“The best sizing kit”

Quality-Overall15%

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

Comfort-Overall8%

“Comfortable”

Value For Money8%

“Great price”

Ease Of Cleaning6%

“The little cleaning sponge is wonderful”

Ease Of Use5%

“Easy to use”

Advertised Vs Actual Product5%

“It performs exactly as intended”

Breastfeeding Friendly4%

“Very helpful and useful for breastfeeding”

Compatibility-Overall3%

“Compatible with Frida Mom manual pump”

Durability3%

“durable”

What buyers complain about

Size-Overall27%

“These are huge”

Functionality-Overall8%

“Did not work”

Quality-Overall7%

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

Durability7%

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

Value For Money5%

“Expensive for a single pair”

Defective Material/Parts4%

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

Product Condition4%

“Item arrived used”

Compatibility-Overall4%

“Incompatible with Elvie Stride”

Allergies4%

“And now its caused an allergic reaction”

Ease Of Use3%

“Semi-useful”

Top return reasons

Size-Overall54%

Functionality-Overall8%

Advertised Vs Actual Product6%

Defective Material/Parts5%

Material Quality3%

Value For Money3%

Comfort-Overall3%

Breastfeeding Friendly3%

Compatibility-Overall2%

Product Condition2%

Common questions

Is elvie stride flange inserts profitable to sell on Amazon United States?: The niche generates $203K/yr across 17 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is -15.0%. Flapen's verdict: Skip it (42/100).
How competitive is the elvie stride flange inserts niche?: 7 brands and 17 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 96% of demand.
What do buyers complain about in elvie stride flange inserts?: Top complaints mined from reviews: Size-Overall, Functionality-Overall, Quality-Overall. The return rate is 4.2%.
When does demand for elvie stride flange inserts peak?: Demand peaks in Jan–Feb; the busiest month runs 2.3× the quietest.
What does it cost to enter the elvie stride flange inserts niche?: Listings span $9.68–$33.45; the average listing price is $18.57 (sweet spot $15–$100). The average incumbent carries 4,121 reviews — the moat a new listing must climb.