---
title: "Small Flask — £75K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/small-flask"
last_updated: "2026-07-31T23:57:37.550Z"
locale: en
meta:
description: "Niche score 46/100 · £75K/yr market · 255K searches/yr · £9.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · £75K/yr market · 255K searches/yr · £9.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Small Flask — £75K/yr Amazon UK Niche (2026) - Flapen"
---
# **small flask**
**Skip it**
Soft demand (-20.0% this quarter) — this niche doesn't clear our bar today.
Market size 19Growth 15Conversion 37Competition 76Returns 83Price range 57Avg price 32Brand share 51Review moat 24Quality gap 73
**Returns**
**Great****1.6%**
return rate — above 5% kills the launch gate
**Competition**
**Great****39%**
top-5 click share — an open shelf
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****£6.27–£26.47**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Good****75%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****3.0%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Okay****£9.87**
avg listing price — sweet spot $15–$100
**Review moat**
**Bad****6,063.67**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****£75K**
£75K/yr · 255K searches
**Growth**
**Bad****-20.0%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, small flask is a £75K/yr Amazon United Kingdom market (255K searches/yr). The top 5 brands hold 75% of demand. Demand peaks in Jan–Nov. Verdict: Skip it — 46/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **small flask market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **£79K–£99K**
- units × avg price
- **Conversion rate**
- **3.0%**
- **Avg BSR**
- **#203**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **69%**
- **Out of stock**
- **0.8%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **179 days**
## **Competition & brand share**
Clicks spread well past the top 5 (39% combined) — an open shelf where new products get seen.
**Brands**
**28 **▼falling
**Sellers**
**83**
**Top-5 brand share**
**75%**
Top 20: 95%
**Top-5 click share**
**39%**
Top 20: 71%
**Open market**
**23%**
- Exllena31% - Thermos30% - YUEHAI6% - YDYxieji5% - MILTON3% - DJDL3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -20.0% search growth over the last 90 days.
7K5KSpike '24Black Friday '24Spike '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Nov · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/uk/home-garden/small-flask/trend)
## **Top small flask search terms**
- **small flask**47K/yr-12.6%2.1% conv. - **small thermos flasks**33K/yr-12.3%2.6% conv. - **small flask for hot drinks**36K/yr-35.8%2.2% conv. - **mini flask**24K/yr-13.4%1.3% conv. - **small coffee flask**13K/yr-16.6%1.0% conv. - **milk flask**10K/yr-6.0%1.3% conv. - **small thermos flasks for hot drinks**12K/yr-45.7%4.4% conv. - **small thermos flask**9K/yr-13.1%3.2% conv. - **small flask for milk**8K/yr-7.2%3.3% conv. - **small thermos**10K/yr-25.3%2.9% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/small-flask/search-terms)
## **Top small 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%3%£2K6%£4K9%£7K12%£9K101001K10K100K1.0M 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**Exllena Small Flask 150ml Made of 304 Stainless Steel Double Wall Vacuum Insulation for Hot&Cold Drinks Mini Flask with Carry Handle - 100% Leakproof(Mint)**Exllena**£7.62**4.4★3,311 rev](https://www.amazon.co.uk/dp/B0CR96B4SP) [2**ThermoCafe Stainless Steel 500ml Flask**Thermos**£8.24**4.6★22,004 rev](https://www.amazon.co.uk/dp/B000TASOEK) [3**Upgraded Exllena Small Water Bottle for Handbag 250ml Small Flask for Hot & Cold Drinks Perfect Small Insulated Water Bottle for Travel Milk Coffee... (Black)**Exllena**£10.10**4.3★1,328 rev](https://www.amazon.co.uk/dp/B0F73XHHDL) [4**Thermos 181114 ThermoCafé Stainless Steel Flask Multicolour 0.35 L**Thermos**£6.91**4.6★3,681 rev](https://www.amazon.co.uk/dp/B000TAU60U) [5**Thermos - Light and Compact Flask (350ml) - Premium Leak Proof Insulated Tea & Coffee Flask for Hot & Cold Drinks Built-in Cup Push Button Stopper BPA-Free Durable Steel**Thermos**£12.50**4.6★12,218 rev](https://www.amazon.co.uk/dp/B008F7O3FI)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Exllena 250ml Mini Thermal Flask 100% Leakproof Pocket Travel Mug for Flat White Coffee & Tea Slim Stainless Steel Small Water Bottle for Handbag Commute Milk BPA Free(Dusty Green)**Exllena**£10.86**99 rev4mo ago](https://www.amazon.co.uk/dp/B0GQRQNBML) [**300ml Small Flask Reusable Vacuum Insulated Stainless Steel Insulated Tumbler Water Bottle with Leakproof Lid for Hot & Cold Drinks Portable Coffee Mug for Travel (Black)**YDYxieji**£6.38**26 rev7mo ago](https://www.amazon.co.uk/dp/B0FSJW17TZ) [**Spotzyllic 2 Pcs 150ml Small Thermos Flask Stainless Steel Water Bottle Keeps Cold 12H/Hot 8H Leak Proof Insulated Cup for Travel Handbag Gift for Couples (Black+Metallic)**Spotzyllic**£9.94**11 rev10mo ago](https://www.amazon.co.uk/dp/B0FQJV7SMF) [**Exllena Upgraded Small Water Bottle for Handbag 250ml Mini Flask for Hot & Cold Drinks Perfect Small Insulated Water Bottle for Travel Milk Coffee...(Pink)**Exllena**£10.09**1,328 rev1y ago](https://www.amazon.co.uk/dp/B0FG1V7BVT) [**Upgraded Exllena Small Water Bottle for Handbag 250ml Small Flask for Hot & Cold Drinks Perfect Small Insulated Water Bottle for Travel Milk Coffee... (Black)**Exllena**£10.10**1,328 rev1y ago](https://www.amazon.co.uk/dp/B0F73XHHDL)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Exllena 250ml Mini Thermal Flask 100% Leakproof Pocket Travel Mug for Flat White Coffee & Tea Slim Stainless Steel Small Water Bottle for Handbag Commute Milk BPA Free(Dusty Green)**Exllena**£10.86**3.8★**▲ 357%**](https://www.amazon.co.uk/dp/B0GQRQNBML) [**Exllena Small Flask 250ml Made of 304 Stainless Steel Double Wall Vacuum Insulation for Hot&Cold Drinks Mini Flask with Carry Handle - 100% Leakproof (Pink)**Exllena**£9.28**4.4★**▲ 300%**](https://www.amazon.co.uk/dp/B0D81FGRF8) [**Spotzyllic 2 Pcs 150ml Small Thermos Flask Stainless Steel Water Bottle Keeps Cold 12H/Hot 8H Leak Proof Insulated Cup for Travel Handbag Gift for Couples (Black+Metallic)**Spotzyllic**£9.94**4.6★**▲ 138%**](https://www.amazon.co.uk/dp/B0FQJV7SMF) [**300ml Small Flask Reusable Vacuum Insulated Stainless Steel Insulated Tumbler Water Bottle with Leakproof Lid for Hot & Cold Drinks Portable Coffee Mug for Travel (Black)**YDYxieji**£6.38**4.3★**▲ 107%**](https://www.amazon.co.uk/dp/B0FSJW17TZ) [**Exllena Small Flask 250ml Water Bottle Made of 304 Stainless Steel Double Wall Vacuum Insulation for Hot&Cold Drinks Mini Flask with Carry Handle - 100% Leakproof (Grayish Blue)**Exllena**£9.43**4.4★**▲ 97%**](https://www.amazon.co.uk/dp/B0D849B25Z)
**~~View all trending →~~**
## **What buyers say about small flask**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“Very useful size”*
**Temperature Retention**16%
*“Great for keeping drink cold”*
**Quality-Overall**10%
*“solid build quality”*
**Leak-Proof**6%
*“Doesn't leak”*
**Advertised Vs Actual Product**5%
*“Meets expectations”*
**Value For Money**5%
*“Good price”*
**Ease Of Use**4%
*“Useful”*
**Color**3%
*“Love the colour, love the size and shape”*
**Heating**3%
*“keeps hot things hot”*
**Temperature Control**3%
*“Practical, maintains temperature all day long”*
### **What buyers complain about **
**Heating**15%
*“Doesnt hold heat as described”*
**Size-Overall**13%
*“Too small”*
**Leak-Proof**13%
*“leaks”*
**Durability**7%
*“Didn't last a week”*
**Value For Money**5%
*“It is a bit pricey”*
**Quality-Overall**4%
*“Poor quality”*
**Advertised Vs Actual Product**3%
*“do not work as advertised”*
**Temperature Retention**3%
*“the heat retention falls short of expectations”*
**Ease Of Cleaning**2%
*“top of all of that its an absolute pain to clean”*
**Design-Overall**2%
*“Item a bit badly manufactured”*
### **Top return reasons **
**Size-Overall**60%
**Leak-Proof**9%
**Color**4%
**Heating**3%
**Quality-Overall**2%
**Temperature Control**2%
**Functionality-Overall**2%
**Value For Money**2%
**Weight Heavy**1%
**Advertised Vs Actual Product**1%
## **Common questions**
- **Is small flask profitable to sell on Amazon United Kingdom?**
- The niche generates £75K/yr across 55 tracked products. 0 of 12 products launched in the last 360 days are still selling. 90-day search growth is -20.0%. Flapen's verdict: Skip it (46/100).
- **How competitive is the small flask niche?**
- 28 brands and 83 sellers compete. The top 5 products take 39% of clicks and top 5 brands hold 75% of demand.
- **What do buyers complain about in small flask?**
- Top complaints mined from reviews: Heating, Size-Overall, Leak-Proof. The return rate is 1.6%.
- **When does demand for small flask peak?**
- Demand peaks in Jan–Nov; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the small flask niche?**
- Listings span £6.27–£26.47; the average listing price is £9.87 (sweet spot $15–$100). The average incumbent carries 6,064 reviews — the moat a new listing must climb.
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