momcozy flange inserts
Skip itA small market ($72K/yr) — this niche doesn't clear our bar today.
Price range
Great$6.97–$41.19cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Good$13.02avg listing price — sweet spot $15–$100
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay1,975.89avg incumbent reviews — the moat a new listing must climb
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Competition
Okay59%top-5 click share — leaders hold, buyers still browse
Returns
Okay3.7%return rate — above 6% kills the launch gate
Brand share
Okay89%top-5 brand share — brands hold most of the demand
Growth
Bad-5.0%90-day search growth — must beat 0% to launch
Market size
Bad$72K$72K/yr · 156K searches
Competition
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.Brands
12 flat
Sellers
15
Top-5 brand share
89%
Open market
7%
- Momcozy45%
- Nursi Luna19%
- Nuliie12%
- LOTBILL8%
- IVARONAL5%
- Maymom4%
- Open — no brand owns it (6 brands, 7%)
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 27 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 15/17/19/21mm
Momcozy$14.024.3★2,611 rev
Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 19mm 4 Pack
Momcozy$14.044.3★2,611 rev
Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms
Nursi Luna$9.874.6★2,081 rev
Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms
Nuliie$9.684.6★4,179 rev
Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield Reduce 24mm Tunnel Down to Correct Size
LOTBILL$7.344.6★583 rev
Newest
by launch date
Momcozy Flange Insert 15mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 15mm
Momcozy$12.121,166 rev
Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm
Momcozy$12.021,166 rev
Momcozy Flange Insert 15/17/19/21mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS
Momcozy$11.981,166 rev
Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms
Nuliie$9.90445 rev
Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack
Momcozy$21.641,175 rev
Trending
90-day click momentumNuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms
Nuliie$9.904.5★
Momcozy 999 Silver Nursing Cups Original Perforated Breathable Design 999 Silver Nipple Cover for Breastfeeding Essential Nipple Shield for Nursing Newborn Metal Nipple Shields Regular Size
Momcozy$41.194.3★
Momcozy Original Replacement Accessories for Upgraded Mobile Flow | Upgraded M9 Original Upgraded M9 Breastfeeding Parts 24mm Flange 1 Pack
Momcozy$21.644.4★
Momcozy M5| M6| M9 Original Replacement Accessories Food-Grade Silicone & BPA Free Original Breastfeeding Parts Inserts 17mm 4 Pack
Momcozy$14.204.3★
Momcozy Flange Insert 19mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 19mm
Momcozy$12.024.3★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.0% search growth over the last 90 days.Peak months: May · busiest ÷ quietest = 1.5×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Good variety of sizes”
“One thing that really stood out to me was how well-made”
“This made it so easy for me”
“Good price”
“So comfortable”
“Very helpful and useful for breastfeeding”
“As advertised”
“The little cleaning sponge is wonderful”
“Compatible with Frida Mom manual pump”
“they are pretty durable”
What buyers complain about
“Does NOT fit”
“several more have broken previously”
“Quality is a little cheaper then I was hoping for”
“Expensive”
“Very uncomfortable”
“Part Breaks”
“Got sent used & dirty flanges”
“Splits apart weak adhesive doesnt clip together to hold in place”
“they are kind of a pain to insert and clean and the output isnt as good as just using the correct size pump accessory”
“Incompatible with Elvie Stride”