breast shells
Skip itA small market ($63K/yr) — this niche doesn't clear our bar today.
Avg price
Great$19.12avg listing price — sweet spot $15–$100
Price range
Great$8.01–$59.64cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Conversion
Good6.6%search→purchase rate — share of searches ending in a sale
Returns
Okay3.9%return rate — above 6% kills the launch gate
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Review moat
Okay2,572.5avg incumbent reviews — the moat a new listing must climb
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Growth
Bad-11.2%90-day search growth — must beat 0% to launch
Market size
Bad$63K$63K/yr · 50K searches
Competition
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
33
Top-5 brand share
81%
Open market
13%
- Medela31%
- Momcozy20%
- Silverette12%
- YIYEE11%
- Zdolmy8%
- haakaa6%
- Open — no brand owns it (6 brands, 13%)
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 18 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Medela TheraShells Breast Shells Protect Sore Flat or Inverted Nipples While Pumping or Breastfeeding Natural Appearance and Exceptional Comfort Made Without BPA
Medela$16.433.9★641 rev
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★691 rev
Silverette The Original Silver Nursing Cups Nipple Covers for Breastfeeding Essentials model number: 7300 Pure 925 Silver Nipple Shields for Breastfeeding Lightweight Nursing Cups Regular Size
Silverette$59.644.5★7,197 rev
YIYEE Breast Shells Milk Saver for Breastfeeding 4 Pack BPA Free Breast Shield Nursing Cups Protect Sore Nipples Breast Milk Collection Shells
YIYEE$10.184.3★1,070 rev
Breast Shells Milk Saver Nursing Cups Nursing Moms to Ease Nipple Pain BPA-Free and Reusable Collect Breast Milk Leak (Pack of 2)
Zdolmy$8.944.2★3,018 rev
Newest
by launch date
Momcozy Breast Milk Collector Slim Discreet Waterdrop Silicone Breast Shells for Light Milk Leakage Collection with Storage Case (1oz/30ml 2PCS)
Momcozy$21.821,046 rev
haakaa Petal Soft Silicone Milk CollectorDiscreet Leak-Protection Breast Milk Saver Reusable Breast Shells Milk Collection Cup for Breastfeeding with Cleaning Brush- 2PCS
haakaa$21.65818 rev
haakaa Petal Soft Silicone Milk CollectorDiscreet Leak-Protection Breast Milk Saver Reusable Breast Shells Milk Collection Cup for Breastfeeding with Cleaning Brush- 1PC
haakaa$14.05818 rev
Breast Milk Collector Milk Collectors for Breastfeeding Reusable Breast Milk Shells Catcher Protect Sore Nipples for Breastfeeding Made from BPA-Free and Food-Safe Silicone(2.03oz 2 Counts)
COMI$12.30137 rev
Momcozy Breast Milk Collector Large Capacity for High Milk Supply Milk Collectors for Breastfeeding Reusable Soft Silicone Breast Shells (3oz/90ml 2PCS)
Momcozy$22.331,046 rev
Trending
90-day click momentumMomcozy Breast Milk Collector Slim Discreet Waterdrop Silicone Breast Shells for Light Milk Leakage Collection with Storage Case (1oz/30ml 2PCS)
Momcozy$21.824.4★
Leg Avenue Shell Adhesive Jewel Nipple Stickers Clear O/S
Leg Avenue$9.693.8★
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★
Silverette The Original Silver Nursing Cups Nipple Covers for Breastfeeding Essentials model number: 7300 Pure 925 Silver Nipple Shields for Breastfeeding Lightweight Nursing Cups Regular Size
Silverette$59.644.5★
Breast Milk Collector Milk Collectors for Breastfeeding Reusable Breast Milk Shells Catcher Protect Sore Nipples for Breastfeeding Made from BPA-Free and Food-Safe Silicone(2.03oz 2 Counts)
COMI$12.304.2★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -11.2% search growth over the last 90 days.Peak months: Aug · busiest ÷ quietest = 2.0×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Solid product, almost perfect”
“So comfortable”
“A must for breastfeeding”
“Best investment”
“No leakage”
“Easy to wash and keep clean”
“Easy to put on”
“fit all sizes”
“As advertised”
“Silicone is very soft and comfortable”
What buyers complain about
“leaks around the edges”
“Waste of money”
“They are uncomfortable”
“The adhesive both works and doesnt work”
“these are so big”
“since it doesnt clean it very well”
“Did not work for me”
“used”
“Just wasnt easy to use”
“cannot get rid of the chemical smell”