Is medela flange 19mm profitable to sell on Amazon United States?

The niche generates $61K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -10.0%. Flapen's verdict: Skip it (34/100).

How competitive is the medela flange 19mm niche?

9 brands and 15 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 85% of demand.

What do buyers complain about in medela flange 19mm?

Top complaints mined from reviews: Size-Overall, Comfort-Overall, Quality-Overall. The return rate is 3.3%.

When does demand for medela flange 19mm peak?

Demand is steady year-round — the busiest month runs 1.6× the quietest.

What does it cost to enter the medela flange 19mm niche?

Listings span $8.00–$15.64; the average listing price is $12.58 (sweet spot $15–$100). The average incumbent carries 3,796 reviews — the moat a new listing must climb.

medela flange 19mm

Skip it

Prices mostly outside the sweet spot ($8.00–$15.64) — this niche doesn't clear our bar today.

Conversion

Incredible16.5%

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

Avg price

Good$12.58

avg listing price — sweet spot $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Returns

Okay3.3%

return rate — above 5% kills the launch gate

Brand share

Okay85%

top-5 brand share — brands hold most of the demand

Review moat

Okay3,796

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-10.0%

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

Market size

Bad$61K

$61K/yr · 30K searches

Competition

Bad82%

top-5 click share — a locked-up shelf

Price range

Bad$8.00–$15.64

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

According to Flapen's Amazon United States niche tracking, medela flange 19mm is a $61K/yr Amazon United States market (30K searches/yr). The top 5 brands hold 85% of demand. Verdict: Skip it — 34/100.

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

medela flange 19mm market data

Units sold / yr: 4K–5K; avg 250–500/product
Revenue / yr: $50K–$63K; units × avg price
Conversion rate: 16.5%
Avg BSR: #38
Page quality: 0%
Prime: 100%
Sponsored: 90%
Out of stock: 0.0%
Avg brand age: 40 months
Avg seller age: 149 days

Competition & brand share

The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.

Brands

9 rising

Sellers

Top-5 brand share

85%

Top 20: 100%

Top-5 click share

82%

Top 20: 100%

Open market

PUMPMOM-US37%
NENESUPPLY26%
Zafflerva10%
Maymom6%
Suniceme6%
Medela6%
Open — no brand owns it (3 brands, 9%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -10.0% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top medela flange 19mm search terms

medela flange 19mm10K/yr -5.8%12.5% conv.
medela 19mm flange8K/yr -7.4%14.1% conv.
medela hand pump flange 19mm3K/yr +13.1%19.5% conv.
19mm flange medela4K/yr -35.1%16.3% conv.
19 mm flange medela4K/yr -12.4%14.5% conv.

All search terms

Top medela flange 19mm 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 10 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

19mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories

PUMPMOM-US$13.544.5★440 rev

Nenesupply 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 19mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex

NENESUPPLY$14.954.4★4,444 rev

19mm Oval Pump Flanges Compatible with Medela Breast Pump Replacement Parts Compatible with Pump in Style Symphony Swing Maxi Harmony and Personalfit Flex

Zafflerva$9.654.9★16 rev

Maymom 19mm MyFit Shields Pano Series; Compatible with Medela Breast Pump- PersonalFit Freestyle Harmony Maxi Freestyle Flex Connector; Connect to Maymom Widemouth/Narrow Connector 2pcs

Maymom$15.494.5★8,889 rev

Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges Reduce 24mm Nipple Tunnel Down to 19 mm 4PCS

Suniceme$8.004.5★971 rev

Newest

by launch date

19mm Oval Pump Flanges Compatible with Medela Breast Pump Replacement Parts Compatible with Pump in Style Symphony Swing Maxi Harmony and Personalfit Flex

Zafflerva$9.6516 rev

6mo ago

MOOMentaneous 19mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector

MOOMentaneous$12.46207 rev

1y ago

2pcs 19mm Soft Rim Flanges with 106 Degree Wider Opening Angle for Medela Breast Pump PersonalFit Freestyle Maxflow Freestyle Flex Swing Maxi Connector Lansinoh Signature Pro

IVARONAL$14.14451 rev

1y ago

PumpMom-us 19mm Oval Flanges Compatible with Medela Breast Pump Parts Replace Nipple Shields Flanges Compatible with Medela Pump in Style PersonalFit Symphony Freestyle Flex Swing Maxi

PUMPMOM-US$12.07724 rev

2y ago

Flange Inserts 19mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges Reduce 24mm Nipple Tunnel Down to 19 mm 4PCS

Suniceme$8.00971 rev

2y ago

What buyers say about medela flange 19mm

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

What buyers love

Size-Overall44%

“The size is accurate”

Comfort-Overall13%

“So comfortable”

Quality-Overall13%

“High quality loved the storage case”

Ease Of Cleaning5%

“easy to clean”

Advertised Vs Actual Product4%

“measures exactly as advertised”

Ease Of Use4%

“easy to use”

Breastfeeding Friendly3%

“Great for breastfeeding and pumping”

Value For Money3%

“Good value for price”

Leak-Proof2%

“so far no leaking”

Durability2%

“Very durable”

What buyers complain about

Size-Overall34%

“Doesnt fit snug”

Comfort-Overall14%

“less comfortable”

Quality-Overall6%

“Quality is a little cheaper then I was hoping for”

Product Condition6%

“Arrived used”

Functionality-Overall6%

“Didn't give a good output”

Compatibility-Overall6%

“This does not work for the Swing Maxi”

Durability6%

“Fell apart after significant use”

Shape/Style3%

“they lose their shape”

Ease Of Use3%

“less comfortable”

Grip2%

“It slipped back”

Top return reasons

Size-Overall72%

Functionality-Overall5%

Advertised Vs Actual Product4%

Width4%

Material Quality2%

Defective Material/Parts2%

Compatibility-Overall2%

Value For Money1%

Breastfeeding Friendly1%

Comfort-Overall1%

Common questions

Is medela flange 19mm profitable to sell on Amazon United States?: The niche generates $61K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -10.0%. Flapen's verdict: Skip it (34/100).
How competitive is the medela flange 19mm niche?: 9 brands and 15 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 85% of demand.
What do buyers complain about in medela flange 19mm?: Top complaints mined from reviews: Size-Overall, Comfort-Overall, Quality-Overall. The return rate is 3.3%.
When does demand for medela flange 19mm peak?: Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the medela flange 19mm niche?: Listings span $8.00–$15.64; the average listing price is $12.58 (sweet spot $15–$100). The average incumbent carries 3,796 reviews — the moat a new listing must climb.