medela flange 17mm
Skip itPrices mostly outside the sweet spot ($8.02–$15.53) — this niche doesn't clear our bar today.
Conversion
Incredible13.7%search→purchase rate — share of searches ending in a sale
Avg price
Good$12.83avg listing price — sweet spot $15–$100
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Okay2,067.3avg incumbent reviews — the moat a new listing must climb
Returns
Okay5.4%return rate — above 6% kills the launch gate
Growth
Bad-7.3%90-day search growth — must beat 0% to launch
Brand share
Bad94%top-5 brand share — brand-locked demand
Market size
Bad$42K$42K/yr · 24K searches
Competition
Bad88%top-5 click share — a locked-up shelf
Price range
Bad$8.02–$15.53cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 rising
Sellers
9
Top-5 brand share
94%
Open market
4%
- PUMPMOM-US44%
- NENESUPPLY35%
- Maymom6%
- MOOMentaneous5%
- Suniceme5%
- Zafflerva2%
- Open — no brand owns it (2 brands, 4%)
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
Nenesupply 17mm Oval Flanges Compatible with Medela Breast Pump Parts Replace 17mm Medela Flange Accessories. Work with Pump in Style Parts Symphony Parts Swing Maxi Harmony and Personalfit Flex
NENESUPPLY$14.914.4★4,444 rev
17mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories
PUMPMOM-US$13.574.5★440 rev
PumpMom-us 17mm Flange with Soft Rim Breast Pump Shields Flanges for Medela Replace Flange Compatible with Medela Breast Pumps PersonalFit Freestyle Maxflow Freestyle Flex Swing Maxi Connector
PUMPMOM-US$12.544.4★724 rev
17mm 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$15.534.5★8,889 rev
MOOMentaneous 17mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector
MOOMentaneous$12.474.2★207 rev
Newest
by launch date
Breast Flanges 17mm 2-Pack for Medela Pump in Style Symphony Freestyle Sonata Maxflow and Lansinoh Signature Pro Breast Pumps
MilkFlow$13.8187 rev
17mm Oval Pump Flanges Compatible with Medela Breast Pump Replacement Parts Compatible with Pump in Style Symphony Swing Maxi Harmony and Personalfit Flex
Zafflerva$9.6616 rev
MOOMentaneous 17mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector
MOOMentaneous$12.47207 rev
2pcs 17mm 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$14.13451 rev
Suniceme Flange Inserts 17mm Compatible with Medela/Spectra/TSRETE/Elvie/Momcozy/Bellababy Breast Pump 24mm Shields/Flanges Reduce 24mm Nipple Tunnel Down to 17 mm 4PCS
Suniceme$8.02971 rev
Trending
90-day click momentum17mm Oval Flanges Shields Compatible with Medela Pumps Replacement Parts for Pump in Style Symphony Swing Maxi Harmony and Personalfit FlexBreast Pump Accessories
PUMPMOM-US$13.574.5★
17mm Oval Pump Flanges Compatible with Medela Breast Pump Replacement Parts Compatible with Pump in Style Symphony Swing Maxi Harmony and Personalfit Flex
Zafflerva$9.664.9★
Breast Flanges 17mm 2-Pack for Medela Pump in Style Symphony Freestyle Sonata Maxflow and Lansinoh Signature Pro Breast Pumps
MilkFlow$13.814.4★
17mm 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$15.534.5★
MOOMentaneous 17mm Oval Flanges Breast Pump Parts Compatible with Medela Breast Pumps PersonalFit Maxflow Freestyle Flex Swing Maxi Connector
MOOMentaneous$12.474.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -7.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.3×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Sizing is true to whats listed”
“comfortable”
“Overall, theyre well made”
“For $9.99, you get two flanges, which feels like a solid value”
“Do the job”
“Maymom flange fits perfect with their flange adapter for spectra s2”
“it also seems to help catch small drips so milk doesnt spill off the flange tip as easily”
“Durable, soft and easy to use because they are round not an oblong oval”
“The outer silicone ring is flexible and soft, so it hugs comfortably against my skin without digging in”
“I like the feel of these, they are a softer material, they have good grip and can be cleaned in the electric sterile and dryer”
What buyers complain about
“They were used”
“Didnt last”
“Very flimsy”
“these just werent comfortable”
“after I try to remove it, it sticks/ pinches and pulls at my boon and nipple”
“did not work for me”
“Washed in dishwasher nearly every day”
“overall disappointed in quality”
“They are not hands free”
“Unfortunately, this particular size just isnt the right match for me,”