baby bottle cover
Skip itPrices mostly outside the sweet spot ($3.92–$14.72) — this niche doesn't clear our bar today.
Conversion
Great8.9%search→purchase rate — share of searches ending in a sale
Returns
Great1.6%return rate — above 6% kills the launch gate
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Review moat
Okay1,512.38avg incumbent reviews — the moat a new listing must climb
Market size
Okay$137K$137K/yr · 161K searches
Avg price
Okay$9.56avg listing price — sweet spot $15–$100
Growth
Okay+1.1%90-day search growth — must beat 0% to launch
Brand share
Bad91%top-5 brand share — brand-locked demand
Competition
Bad91%top-5 click share — a locked-up shelf
Price range
Bad$3.92–$14.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
17
Top-5 brand share
91%
Open market
6%
- Dr. Brown's50%
- Toyvian26%
- Joxodak8%
- EESC2Y4%
- Gosknor3%
- Pequeño3%
- Open — no brand owns it (2 brands, 6%)
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 8 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Dr. Browns Narrow Storage/Travel Caps for Anti-colic Options+ Baby Bottles fits 8 oz/250 mL and 4 oz/120mL BPA-Free 3-Pack
Dr. Brown's$3.924.9★11,232 rev
Toyvian Milk Bottle Caps Replacement 6 Pcs Clear Plastic Feeding Bottles Lids Replacement The Bottom Diameter is Approximately 6.2cm
Toyvian$10.563.6★14 rev
Joxodak 10 pcs Travel Bottle Caps for Dr Brown Narrow Baby Bottle Baby Bottle Lids Replacement with Sealing Gasket (White)
Joxodak$7.844.5★89 rev
(9-PCs) Travel Bottle Caps Compatible with Dr Brown Narrow Bottles Storage Caps Replacement for Medela Bottles Bottle Caps Fit Ameda Evenflo Gerber Lifefactory and Parents Choice Bottles - Model A
EESC2Y$7.974.6★149 rev
10pcs Narrow Baby Bottle Caps for Dr Brown & Medela Bottles BPA Free Travel and Storage Baby Bottle Lids Replacement Parts with Sealing Gasket for Ameda Baby Bottles Accessory (White)
Gosknor$7.924.6★148 rev
Newest
by launch date
CHUBBIEE Reusable Storage/Travel Caps Compatible with Dr. Browns Wide-Neck Baby Bottles Leak-Proof Lids for Formula Shaking Fridge Storage Microwave Safe BPA-Free 6-Pack
CHUBBIEE$9.76100 rev
Joxodak 10 pcs Travel Bottle Caps for Dr Brown Narrow Baby Bottle Baby Bottle Lids Replacement with Sealing Gasket (White)
Joxodak$7.8489 rev
10pcs Narrow Baby Bottle Caps for Dr Brown & Medela Bottles BPA Free Travel and Storage Baby Bottle Lids Replacement Parts with Sealing Gasket for Ameda Baby Bottles Accessory (White)
Gosknor$7.92148 rev
Toyvian Milk Bottle Caps Replacement 6 Pcs Clear Plastic Feeding Bottles Lids Replacement The Bottom Diameter is Approximately 6.2cm
Toyvian$10.5614 rev
HOLIDYOYO 4pcs Bottle Caps Replacement Lids Plastic Milk Bottle Caps for Feeding Bottles Reusable and Convenient Design Compact for Easy Use
HOLIDYOYO$13.806 rev
Trending
90-day click momentumToyvian Milk Bottle Caps Replacement 6 Pcs Clear Plastic Feeding Bottles Lids Replacement The Bottom Diameter is Approximately 6.2cm
Toyvian$10.563.6★
CHUBBIEE Reusable Storage/Travel Caps Compatible with Dr. Browns Wide-Neck Baby Bottles Leak-Proof Lids for Formula Shaking Fridge Storage Microwave Safe BPA-Free 6-Pack
CHUBBIEE$9.764.6★
6pcs Replacement Baby Bottle Nipple Ring Collars w/Cleaning Brush for Dr. Browns Narrow Bottles 4oz & 8oz | 1 Count(Pack of 6) BPA Free | Plastic & Glass Bottles | Mess-Free No Leak or Spills Collars
Pequeño$14.724.5★
Joxodak 10 pcs Travel Bottle Caps for Dr Brown Narrow Baby Bottle Baby Bottle Lids Replacement with Sealing Gasket (White)
Joxodak$7.844.5★
Dr. Browns Narrow Storage/Travel Caps for Anti-colic Options+ Baby Bottles fits 8 oz/250 mL and 4 oz/120mL BPA-Free 3-Pack
Dr. Brown's$3.924.9★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +1.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Fit perfectly”
“Doesnt leak”
“These caps are absolutely AMAZING”
“Easy cleaning”
“Super inexpensive”
“Works as described”
“super durable for the price”
“They are simple to use”
“Doctor Brown Bottle compatibility”
“Great for using the bottles as storage for breastmilk”
What buyers complain about
“Leaking”
“I washed them assuming they would fit because its the dr brown brand so cant return them”
“it was breaking apart”
“They are very cheap feeling”
“Brown & unknown brand”
“Easily moldy hard to clean”
“don't stay closed very well”
“Moldy”