Is flask profitable to sell on Amazon United States?

The niche generates $1.6M/yr across 30 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -1.3%. Flapen's verdict: Worth a look (59/100).

How competitive is the flask niche?

20 brands and 35 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 68% of demand.

What do buyers complain about in flask?

Top complaints mined from reviews: Size-Overall, Leak-Proof, Durability. The return rate is 2.5%.

When does demand for flask peak?

Demand peaks in Dec; the busiest month runs 2.4× the quietest.

What does it cost to enter the flask niche?

Listings span $7.07–$51.08; the average listing price is $17.15 (sweet spot $15–$100). The average incumbent carries 1,315 reviews — the moat a new listing must climb.

flask

Worth a look

Shows a $1.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Market size

Great$1.6M

$1.6M/yr · 2.6M searches

Price range

Great$7.07–$51.08

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

Avg price

Great$17.15

avg listing price — sweet spot $15–$100

Competition

Good42%

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

Returns

Good2.5%

return rate — above 5% kills the launch gate

Brand share

Good68%

top-5 brand share — brands hold most of the demand

Review moat

Good1,314.73

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay3.6%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Bad-1.3%

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

Signals No Dominant Brand

According to Flapen's Amazon United States niche tracking, flask is a $1.6M/yr Amazon United States market (2.6M searches/yr). The top 5 brands hold 68% of demand. Demand peaks in Dec. Verdict: Worth a look — 59/100.

Data updated Aug 6, 2026 · scored weekly · How we score niches

flask market data

Units sold / yr: 80K–100K; avg 1,500–2,000/product
Revenue / yr: $1.4M–$1.7M; units × avg price
Conversion rate: 3.6%
Avg BSR: #46
Page quality: 0%
Prime: 100%
Sponsored: 60%
Out of stock: 7.2%
Avg brand age: 52 months
Avg seller age: 160 days

Competition & brand share

The top 5 products take 42% of clicks — established leaders, but buyers still shop beyond them.

Brands

20 falling

Sellers

Top-5 brand share

68%

Top 20: 100%

Top-5 click share

42%

Top 20: 87%

Open market

28%

ROMROC19%
STANLEY16%
YWQ13%
GoPong13%
Ragproper7%
KABUDA5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -1.3% search growth over the last 90 days.

Peak months: Dec · busiest ÷ quietest = 2.4×

Open Trend

Top flask search terms

flask1.4M/yr -2.1%2.8% conv.
flasks for liquor191K/yr +84.4%3.1% conv.
flask for women233K/yr -24.6%1.3% conv.
flask for men303K/yr -52.6%2.1% conv.
flasks90K/yr +7.0%2.0% conv.
hip flask68K/yr +1.0%1.9% conv.
mini flask44K/yr +4.2%0.5% conv.
whiskey flask45K/yr -2.6%2.2% conv.
small flask37K/yr -4.0%0.9% conv.
flasks for liquor for women30K/yr +7.0%1.1% conv.

All search terms

Top flask 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 24 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

ROMORC 2 Pack Hip Flasks for Liquor Matte Black 8 Oz Stainless Steel Leak-proof Thin Flasks with 2pcs Funnels and Cups for Wedding Party Groomsman Bridesmaid Gift (Black)

ROMROC$10.554.5★885 rev

GoPong Tampon Flasks 12 Pack (18 oz Total) - Hidden Alcohol Travel Flasks for Women - Secret Liquor Containers for Nightclubs Festivals Cruises and Sports Events Includes Funnel & Spout

GoPong$9.994.7★1,469 rev

STANLEY$24.364.3★62 rev

STANLEY$25.184.7★2,054 rev

Ragproper Glass Hip Flask for Men Modern Whiskey & Liquor Flask with Cork & Silicone Lid Liners Durable Silicone Covered Double Shot Flask Bottle (8oz 240ml Black)

Ragproper$33.434.6★1,204 rev

Newest

by launch date

STANLEY$24.3662 rev

7mo ago

STANLEY$24.4355 rev

7mo ago

Rabbit Leak-Proof Discreet Flask 6.5oz Pocket-Friendly Shatterproof Tritan Alcohol Container with Wide Mouth & Tethered Cap Portable BPA-Free Travel Flask for Concerts & Festivals

Rabbit$12.3871 rev

11mo ago

STANLEY$23.24145 rev

1y ago

2-Pack 8 Oz Bling Hip Flasks for Liquor Hianjoo Leakproof Thin Stainless Steel Flasks Pocket Flask with Funnel for Women Portable Metal Flask for Camping Outdoor Activity Wedding Party Gift Pink

Hianjoo$10.12214 rev

1y ago

What buyers say about flask

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

What buyers love

Leak-Proof18%

“Does not leak”

Quality-Overall12%

“Seems well made”

Value For Money10%

“Great Value”

Size-Overall9%

“I like the size”

Advertised Vs Actual Product7%

“as advertised”

Ease Of Use7%

“easy to open”

Gifting Purpose6%

“Awesome gift”

Portability4%

“These were easy to use and carry, very portable”

Efficiency4%

“does the job”

Durability3%

“They are very durable”

What buyers complain about

Size-Overall21%

“Long”

Leak-Proof19%

“bottles leaked”

Durability7%

“Durability is not great”

Quality-Overall6%

“Poor quality glass”

Ease Of Use5%

“Impossible to fill”

Value For Money4%

“I blame myself for 'buying cheap'”

Color Fading/Discoloration3%

“it still turned liquids black”

Color3%

“pulled out black”

Smell2%

“Had a super strong lacquer smell on the outside”

Advertised Vs Actual Product2%

“the listing is not honest”

Top return reasons

Size-Overall49%

Leak-Proof10%

Advertised Vs Actual Product6%

Value For Money6%

Quality-Overall5%

Material Quality4%

Functionality-Overall3%

Weight Heavy2%

Product Condition2%

Ease Of Use2%

Common questions

Is flask profitable to sell on Amazon United States?: The niche generates $1.6M/yr across 30 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is -1.3%. Flapen's verdict: Worth a look (59/100).
How competitive is the flask niche?: 20 brands and 35 sellers compete. The top 5 products take 42% of clicks and top 5 brands hold 68% of demand.
What do buyers complain about in flask?: Top complaints mined from reviews: Size-Overall, Leak-Proof, Durability. The return rate is 2.5%.
When does demand for flask peak?: Demand peaks in Dec; the busiest month runs 2.4× the quietest.
What does it cost to enter the flask niche?: Listings span $7.07–$51.08; the average listing price is $17.15 (sweet spot $15–$100). The average incumbent carries 1,315 reviews — the moat a new listing must climb.