milk thermos
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Price range
Incredible$29.73–$81.69cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$55.84avg listing price — sweet spot $15–$100
Review moat
Good1,137.79avg incumbent reviews — the moat a new listing must climb
Market size
Good$385K$385K/yr · 331K searches
Growth
Okay+2.8%90-day search growth — must beat 0% to launch
Returns
Okay4.7%return rate — above 5% kills the launch gate
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Competition
Bad74%top-5 click share — a locked-up shelf
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, milk thermos is a $385K/yr Amazon United States market (331K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 36/100.
Data updated Jul 12, 2026 · scored weekly · How we score niches
milk thermos market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $335K–$447K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 13.0%
- Avg brand age
- 35 months
- Avg seller age
- 156 days
Competition & brand share
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 flat
Sellers
14
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
74%
Top 20: 100%
Open market
0%
- CERES CHILL72%
- Boon20%
- Momcozy6%
- Willow1%
Demand
Weekly Amazon search volume, last 20 weeks — +2.8% search growth over the last 90 days.Top milk thermos search terms
- ceres chill146K/yr
- ceres chill breastmilk storage69K/yr
- ceres chill breastmilk chiller16K/yr
- milk thermos17K/yr
- ceres chiller14K/yr
- boon frosh milk chiller5K/yr
- boon milk cooler6K/yr
- ceres chill bottle10K/yr
- boon milk chiller12K/yr
- insulated milk container4K/yr
Top milk thermos products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 14 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ceres CHILL OG Breastmilk Chiller & Warmer 1234oz Portable Breast Milk Cooler Storage & Baby Bottle for Travel Work or On-The-Go Pump Compatible Container Dont Call Me Hon Plum
CERES CHILL$61.654.7★1,772 rev
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Touching Grass
CERES CHILL$64.544.7★1,772 rev
Boon Frosh Portable Breastmilk Chiller - Insulated Stainless Steel Cooler and Storage Container - Blue - Keeps Milk Cold for up to 17 Hours*
Boon$29.734.6★746 rev
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Moonlighting
CERES CHILL$64.994.7★1,772 rev
Boon Frosh Portable Breastmilk Chiller - Insulated Stainless Steel Cooler and Storage Container - Purple - Keeps Milk Cold for up to 17 Hours*
Boon$30.994.6★746 rev
Newest
by launch dateCeres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Touching Grass
CERES CHILL$64.541,772 rev
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container Dusty Lilac
CERES CHILL$63.961,772 rev
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Little Black Dress
CERES CHILL$65.261,772 rev
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Moonlighting
CERES CHILL$64.991,772 rev
Momcozy Portable Breast Milk Cooler for Travel 24H Ice-Free Cooling Breastmilk Storage Bottles Container 12 Ounces Leak Proof Outdoor Small Freezer Baby Breastfeeding Essential for New Moms
Momcozy$56.69261 rev
Trending
90-day click momentumCeres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Moonlighting
CERES CHILL$64.994.7★
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Touching Grass
CERES CHILL$64.544.7★
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container Dusty Lilac
CERES CHILL$63.964.7★
Ceres CHILL OG+ Breastmilk Chiller/Warmer 1238oz Portable Breast Milk Cooler Two Chilling Options & More Capacity Pump Compatible Container - Little Black Dress
CERES CHILL$65.264.7★
Boon Frosh Portable Breastmilk Chiller - Insulated Stainless Steel Cooler and Storage Container - Blue - Keeps Milk Cold for up to 17 Hours*
Boon$29.734.6★
What buyers say about milk thermos
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to use”
“Worth every penny in my opinion”
“easy to carry”
“no complaints”
“Easy to clean”
“It doesnt leak”
“The size is perfect for outings”
“Durable and works great”
“doesnt take too much room”
“The design is very practical”
What buyers complain about
“Leaks”
“Also, the 10 oz cooler is slimmer. not just shorter”
“Ice pack broke 5 months in”
“A little pricey”
“Doesnt close well”
“This product came to us used”
“Is a little bulky for everyday use”
“CHEAPLY MADE”
“it doesnt hold much milk”
“The reason for 4 stars is that it is a little hard to keep clean”
Top return reasons
Common questions
- Is milk thermos profitable to sell on Amazon United States?
- The niche generates $385K/yr across 14 tracked products. 4 of 4 products launched in the last 360 days are still selling. 90-day search growth is +2.8%. Flapen's verdict: Skip it (36/100).
- How competitive is the milk thermos niche?
- 4 brands and 14 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in milk thermos?
- Top complaints mined from reviews: Leak-Proof, Size-Overall, Durability. The return rate is 4.7%.
- What does it cost to enter the milk thermos niche?
- Listings span $29.73–$81.69; the average listing price is $55.84 (sweet spot $15–$100). The average incumbent carries 1,138 reviews — the moat a new listing must climb.