momcozy s12 pro flange insert
Skip itBrand-locked demand (top 5 brands take 93% of clicks) — this niche doesn't clear our bar today.
Price range
Good$6.92–$34.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good5.7%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Avg price
Good$12.44avg listing price — sweet spot $15–$100
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Review moat
Good1,416.17avg incumbent reviews — the moat a new listing must climb
Returns
Okay3.1%return rate — above 6% kills the launch gate
Growth
Bad-14.0%90-day search growth — must beat 0% to launch
Market size
Bad$70K$70K/yr · 98K searches
Brand share
Bad93%top-5 brand share — brand-locked demand
Competition
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.Brands
8 falling
Sellers
11
Top-5 brand share
93%
Open market
2%
- Momcozy58%
- Nursi Luna11%
- IVARONAL10%
- LOTBILL8%
- Parner6%
- Nuliie5%
- Open — no brand owns it (2 brands, 2%)
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 24 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 19mm 4 Pack
Momcozy$14.044.3★2,611 rev
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 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$11.984.3★1,166 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
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
Newest
by launch date
Momcozy Flange Insert 21mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 21mm
Momcozy$11.911,166 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 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 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
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 momentumMomcozy Flange Insert 21mm Compatible with 24mm Flange/Shield of Most Pumps Fit for Momcozy S9Pro/S12Pro/S12Pro-Quick Replacement Accessories 4PCS 21mm
Momcozy$11.914.3★
Momcozy Pumping Bra for Wearable Breast Pump Nursing & Pumping Bra in One Hands Free Pump Bra Suitable for M5 S12 Pro etc Black
Momcozy$34.293.9★
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 102 weeks — -14.0% search growth over the last 90 days.Peak months: Feb, Mar, Apr, May, Jun · busiest ÷ quietest = 4.7×
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”
“So comfortable”
“Good price”
“As advertised”
“The little cleaning sponge is wonderful”
“Very helpful and useful for breastfeeding”
“Compatible with Frida Mom manual pump”
“durable”
What buyers complain about
“Does NOT fit”
“Breaks easily”
“Poor quality”
“Part Breaks”
“The parts are expensive”
“Won't work with momcozy M9”
“Very uncomfortable”
“Looks like it was opened previously”
“they are kind of a pain to insert and clean and the output isnt as good as just using the correct size pump accessory”
“Doesnt work for me”