Is breastmilk storage bag profitable to sell on Amazon United States?

The niche generates $3.8M/yr across 19 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.1%. Flapen's verdict: Worth a look (51/100).

How competitive is the breastmilk storage bag niche?

9 brands and 70 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in breastmilk storage bag?

Top complaints mined from reviews: Leak-Proof, Ease Of Use, Quality-Overall. The return rate is 2.1%.

When does demand for breastmilk storage bag peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the breastmilk storage bag niche?

Listings span $7.35–$39.28; the average listing price is $16.10 (sweet spot $15–$100). The average incumbent carries 22,372 reviews — the moat a new listing must climb.

breastmilk storage bag

Worth a look

Shows a $3.8M/yr market, but a deep review moat (22,372 avg reviews) keeps it on the watch list.

Market size

Incredible$3.8M

$3.8M/yr · 2.9M searches

Conversion

Great8.3%

search→purchase rate — share of searches ending in a sale

Avg price

Great$16.10

avg listing price — sweet spot $15–$100

Price range

Great$7.35–$39.28

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Good2.1%

return rate — above 5% kills the launch gate

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Growth

Bad-7.1%

90-day search growth — must beat 0% to launch

Brand share

Bad92%

top-5 brand share — brand-locked demand

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Review moat

Bad22,372.42

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, breastmilk storage bag is a $3.8M/yr Amazon United States market (2.9M searches/yr). The top 5 brands hold 92% of demand. Verdict: Worth a look — 51/100.

Data updated Jul 12, 2026 · scored weekly · How we score niches

breastmilk storage bag market data

Units sold / yr: 250K–300K; avg 12,500–15,000/product
Revenue / yr: $4.0M–$4.8M; units × avg price
Conversion rate: 8.3%
Avg BSR: #31
Page quality: 0%
Prime: 100%
Sponsored: 74%
Out of stock: 0.0%
Avg brand age: 40 months
Avg seller age: 144 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 rising

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

63%

Top 20: 100%

Open market

Lansinoh34%
Momcozy27%
Nuliie12%
Medela10%
Motif Medical9%
Mama Bear3%
Open — no brand owns it (3 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -7.1% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top breastmilk storage bag search terms

breast milk storage bags freezer1.0M/yr -11.1%8.2% conv.
milk storage bags310K/yr -0.8%7.5% conv.
breastmilk storage bag361K/yr -40.4%7.7% conv.
breast milk bags168K/yr +4.9%6.8% conv.
breast milk storage bags129K/yr +36.3%5.5% conv.
lansinoh milk storage bag142K/yr -11.1%16.1% conv.
milk bags for breastmilk126K/yr -9.0%8.5% conv.
breastmilk bags101K/yr +22.7%7.3% conv.
motif milk storage bags86K/yr -6.8%6.7% conv.
milk bags72K/yr +2.4%8.0% conv.

All search terms

Top breastmilk storage bag 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 19 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Lansinoh Breastmilk Storage Bags 100 Count Baby Essentials Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding Strength & Stretch 6 Ounce

Lansinoh$12.504.8★94,567 rev

Momcozy Breastmilk Storing Bags Temp-Sensing Discoloration Milk Storing Bags for Breastfeeding Disposable Milk Storage Bag with 6 Ounce Self Standing No-Leak Milk Freezer Storage Pouches 120pcs

Momcozy$17.174.8★7,742 rev

Lansinoh Breastmilk Storage Bags 200 Count Value Pack Baby Essentials Leak-Proof Fast Freeze & Thaw Breast Milk Bags for Baby Bottle Feeding Strength & Stretch 6 Ounce

Lansinoh$24.024.8★94,567 rev

Nuliie 120 Pcs Breastmilk Storage Bags Freezer 8 OZ Breast Milk Storing Bags BPA-Free Milk Storage Bags with Pour Spout for Breastfeeding Self-Standing Bag Space Saving Flat Profile

Nuliie$9.764.7★13,313 rev

Motif Medical Breastmilk Storage Bags - Breastmilk Freezer Bags w/Easy Pour Spout Write-On Label - Leak-Proof Double Zipper Milk Bags for Breastmilk - Breastfeeding Mom Gifts (6 oz 100 Count)

Motif Medical$15.914.7★3,110 rev

Newest

by launch date

Frida Mom Breastmilk Storage Bags 50ct Splitstash Freeze & Thaw Milk Bags for Breastmilk Splits Bag into Two 2oz Portions Leakproof Seal Perfect Pour Spout No Slip Finger Grip BPA Free 4oz Bag

Frida Mom$9.3938 rev

6mo ago

Nuliie 100pcs Temp-Sensing Breastmilk Storage Bag Huge Temp-Sensing Icon & Locking Clamp 6oz Breast Milk Storage Bags Freezer Pour Spout Self Standing Milk Storage Bags Breastmilk BPA-Free No-Leak

Nuliie$9.121,223 rev

9mo ago

Amazon Brand - Mama Bear Breastmilk Storage Bags Pre-Sterilized BPA Free Double Zips for Refrigeration and Freezer Storage 100 Count 6 fl oz

Mama Bear$10.83413 rev

1y ago

Cozypepe 100 Pcs Breastmilk Storage Bags 8Oz Breast Milk Storing Bag with Pour Spout Temperature-Sensing Color Change Milk Bag for Convenient Breastfeeding No Leak Presterilized for Freezer

COZYPEPE$9.641,051 rev

1y ago

Medela Easy Pour Breastmilk Storage Bags 100 Count 7oz/210ml Disposable Leakproof Fast Freeze Breast Milk Protection Recyclable & BPA Free

Medela$11.522,651 rev

2y ago

What buyers say about breastmilk storage bag

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall16%

“Good quality, arrived exactly as described”

Ease Of Use15%

“Its easy to use when storing”

Storage Capacity13%

“The storage bag is very useful”

Leak-Proof13%

“Doesnt leak”

Durability7%

“Durable and reliable”

Value For Money6%

“GREAT FOR THE PRICE”

Temperature Control4%

“The temperature-sensing feature is incredibly helpful”

Strength4%

“The bags are sturdy”

Thickness3%

“Thick bags and easy seal”

Breastfeeding Friendly3%

“Breastfeeding must have”

What buyers complain about

Leak-Proof30%

“Leak Everywhere”

Ease Of Use11%

“Hard to use”

Quality-Overall7%

“Lower quality new model”

Design-Overall4%

“Intricate design”

Thickness4%

“The plastic is thick”

Measurement/Reading Accuracy4%

“Incorrect measurement”

Strength3%

“Flimsy”

Durability3%

“These are not very durable”

Advertised Vs Actual Product2%

“False advertising”

Size-Overall2%

“These bags are large”

Top return reasons

Breastfeeding Friendly18%

Size-Overall16%

Value For Money12%

Leak-Proof12%

Storage Capacity5%

Advertised Vs Actual Product5%

Thin4%

Functionality-Overall3%

Quality-Overall3%

Material Quality3%

Common questions

Is breastmilk storage bag profitable to sell on Amazon United States?: The niche generates $3.8M/yr across 19 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.1%. Flapen's verdict: Worth a look (51/100).
How competitive is the breastmilk storage bag niche?: 9 brands and 70 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in breastmilk storage bag?: Top complaints mined from reviews: Leak-Proof, Ease Of Use, Quality-Overall. The return rate is 2.1%.
When does demand for breastmilk storage bag peak?: Demand is steady year-round — the busiest month runs 1.3× the quietest.
What does it cost to enter the breastmilk storage bag niche?: Listings span $7.35–$39.28; the average listing price is $16.10 (sweet spot $15–$100). The average incumbent carries 22,372 reviews — the moat a new listing must climb.