---
title: "Flask — $1.6M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/flask"
last_updated: "2026-08-11T00:01:28.350Z"
locale: en
meta:
description: "Niche score 59/100 · $1.6M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
"og:description": "Niche score 59/100 · $1.6M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Aug 2026."
"og:title": "Flask — $1.6M/yr Amazon US Niche (2026) - Flapen"
---
# **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 88Growth 24Conversion 45Competition 71Returns 63Price range 81Avg price 80Brand share 62Review moat 55Quality gap 35
**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**
**Good****42%**
top-5 click share — leaders hold, buyers still browse
**Returns**
**Good****2.5%**
return rate — above 5% kills the launch gate
**Brand share**
**Good****68%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Good****1,314.73**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****3.6%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-1.3%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=us&signal=no_dominant_brand "Top brand's click share < 20%")
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 ~~](https://flapen.com/research/methodology)
## **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**
**35**
**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.
125K75KSpike '24Holiday '24Spike '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/flask/trend)
## **Top flask search terms**
- **flask**1.4M/yr-2.1%2.8% conv. - **flasks for liquor**191K/yr+84.4%3.1% conv. - **flask for women**233K/yr-24.6%1.3% conv. - **flask for men**303K/yr-52.6%2.1% conv. - **flasks**90K/yr+7.0%2.0% conv. - **hip flask**68K/yr+1.0%1.9% conv. - **mini flask**44K/yr+4.2%0.5% conv. - **whiskey flask**45K/yr-2.6%2.2% conv. - **small flask**37K/yr-4.0%0.9% conv. - **flasks for liquor for women**30K/yr+7.0%1.1% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/flask/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.
0%5%$81K10%$161K15%$242K20%$323K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**$10.55**4.5★885 rev](https://www.amazon.com/dp/B0BG9RQZ3W) [2**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**$9.99**4.7★1,469 rev](https://www.amazon.com/dp/B0CVPYWTMW) [3**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Black**STANLEY**$24.36**4.3★62 rev](https://www.amazon.com/dp/B0GC7THXPR) [4**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Green**STANLEY**$25.18**4.7★2,054 rev](https://www.amazon.com/dp/B07L6MZ9CT) [5**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**$33.43**4.6★1,204 rev](https://www.amazon.com/dp/B08LV3Y751)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Black**STANLEY**$24.36**62 rev7mo ago](https://www.amazon.com/dp/B0GC7THXPR) [**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Frost**STANLEY**$24.43**55 rev7mo ago](https://www.amazon.com/dp/B0GC9XW4RY) [**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**$12.38**71 rev11mo ago](https://www.amazon.com/dp/B0FPGSXDW4) [**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Black 2.0**STANLEY**$23.24**145 rev1y ago](https://www.amazon.com/dp/B0DTN6QWJY) [**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**$10.12**214 rev1y ago](https://www.amazon.com/dp/B0DHGJVCKQ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Frost**STANLEY**$24.43**4.4★**▲ 222%**](https://www.amazon.com/dp/B0GC9XW4RY) [**Stanley Classic Easy Fill Wide Mouth Flask 8 oz | Leakproof Hip Flask | Hinge Connected Never Lose Cap | Insulated Stainless Steel Liquor Container | BPA-Free | Hammertone Black**STANLEY**$24.36**4.3★**▲ 219%**](https://www.amazon.com/dp/B0GC7THXPR) [**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**$12.38**4.4★**▲ 158%**](https://www.amazon.com/dp/B0FPGSXDW4) [**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**$33.43**4.6★**▲ 98%**](https://www.amazon.com/dp/B08LV3Y751) [**YETI 7 oz Flask and Funnel Black**YETI**$51.08**4.8★**▲ 49%**](https://www.amazon.com/dp/B0DBX3KBY8)
**~~View all trending →~~**
## **What buyers say about flask**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Leak-Proof**18%
*“Does not leak”*
**Quality-Overall**12%
*“Seems well made”*
**Value For Money**10%
*“Great Value”*
**Size-Overall**9%
*“I like the size”*
**Advertised Vs Actual Product**7%
*“as advertised”*
**Ease Of Use**7%
*“easy to open”*
**Gifting Purpose**6%
*“Awesome gift”*
**Portability**4%
*“These were easy to use and carry, very portable”*
**Efficiency**4%
*“does the job”*
**Durability**3%
*“They are very durable”*
### **What buyers complain about **
**Size-Overall**21%
*“Long”*
**Leak-Proof**19%
*“bottles leaked”*
**Durability**7%
*“Durability is not great”*
**Quality-Overall**6%
*“Poor quality glass”*
**Ease Of Use**5%
*“Impossible to fill”*
**Value For Money**4%
*“I blame myself for 'buying cheap'”*
**Color Fading/Discoloration**3%
*“it still turned liquids black”*
**Color**3%
*“pulled out black”*
**Smell**2%
*“Had a super strong lacquer smell on the outside”*
**Advertised Vs Actual Product**2%
*“the listing is not honest”*
### **Top return reasons **
**Size-Overall**49%
**Leak-Proof**10%
**Advertised Vs Actual Product**6%
**Value For Money**6%
**Quality-Overall**5%
**Material Quality**4%
**Functionality-Overall**3%
**Weight Heavy**2%
**Product Condition**2%
**Ease Of Use**2%
## **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.
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