medela flange 19mm
Skip itPrices 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$12.58avg listing price — sweet spot $15–$100
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Returns
Okay3.3%return rate — above 6% kills the launch gate
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Review moat
Okay3,796avg 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–$15.64cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
15
Top-5 brand share
85%
Open market
9%
- PUMPMOM-US37%
- NENESUPPLY26%
- Zafflerva10%
- Maymom6%
- Suniceme6%
- Medela6%
- Open — no brand owns it (3 brands, 9%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
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 date19mm 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
MOOMentaneous 19mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector
MOOMentaneous$12.46207 rev
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
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
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
Trending
90-day click momentum19mm 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★
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★
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★
MOOMentaneous 19mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector
MOOMentaneous$12.464.2★
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★
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×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“The size is accurate”
“So comfortable”
“High quality loved the storage case”
“easy to clean”
“measures exactly as advertised”
“easy to use”
“Great for breastfeeding and pumping”
“Good value for price”
“so far no leaking”
“Very durable”
What buyers complain about
“Doesnt fit snug”
“less comfortable”
“Quality is a little cheaper then I was hoping for”
“Arrived used”
“Didn't give a good output”
“This does not work for the Swing Maxi”
“Fell apart after significant use”
“they lose their shape”
“less comfortable”
“It slipped back”