---
title: "Thermos Flask — £1.2M/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/thermos-flask"
last_updated: "2026-07-31T12:11:49.893Z"
locale: en
meta:
description: "Niche score 49/100 · £1.2M/yr market · 2.9M searches/yr · £15.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · £1.2M/yr market · 2.9M searches/yr · £15.87 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Thermos Flask — £1.2M/yr Amazon UK Niche (2026) - Flapen"
---
# **thermos flask**
**Skip it**
Soft demand (-22.9% this quarter) — this niche doesn't clear our bar today.
Market size 81Growth 14Conversion 32Competition 54Returns 85Price range 74Avg price 77Brand share 26Review moat 19Quality gap 40
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Market size**
**Great****£1.2M**
£1.2M/yr · 2.9M searches
**Avg price**
**Great****£15.87**
avg listing price — sweet spot $15–$100
**Price range**
**Good****£6.97–£37.66**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Good****52%**
top-5 click share — leaders hold, buyers still browse
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****15,006.5**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-22.9%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, thermos flask is a £1.2M/yr Amazon United Kingdom market (2.9M searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Jan–Oct–Nov–Dec. Verdict: Skip it — 49/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **thermos flask market data**
- **Units sold / yr**
- **60K–80K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **£952K–£1.3M**
- units × avg price
- **Conversion rate**
- **2.6%**
- **Avg BSR**
- **#90**
- **Page quality**
- **0%**
- **Prime**
- **97%**
- **Sponsored**
- **79%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **46 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**15 **▼falling
**Sellers**
**95**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**52%**
Top 20: 86%
**Open market**
**9%**
- Thermos74% - MILTON8% - Contigo3% - THERMOcafé by THERMOS3% - Jumkeet2% - STANLEY1% - Open — no brand owns it (9 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -22.9% search growth over the last 90 days.
125K75KSpike '24Black Friday '24Prime Day '25Spike '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/uk/home-garden/thermos-flask/trend)
## **Top thermos flask search terms**
- **thermos flask**779K/yr-26.6%2.4% conv. - **flask**658K/yr-23.8%1.7% conv. - **flask for hot drink**408K/yr-32.5%2.3% conv. - **thermos**341K/yr-18.6%1.3% conv. - **flasks for hot and cold drinks**70K/yr+95.8%1.2% conv. - **hot water flask**75K/yr-24.6%1.9% conv. - **thermal flask**79K/yr-30.8%1.6% conv. - **stainless steel flask**25K/yr+192.4%0.7% conv. - **flasks**61K/yr-23.8%1.1% conv. - **thermos flask for hot drinks**52K/yr-35.4%2.6% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/thermos-flask/search-terms)
## **Top thermos 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%4%£47K8%£94K12%£141K16%£188K1001K10K100K1.0M 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**Thermos - Stainless King Midnight Blue Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask Hot & Cold Drinks Built-in Cup Twist-Pour Stopper BPA-Free Durable Steel**Thermos**£20.00**4.7★24,566 rev](https://www.amazon.co.uk/dp/B001ET6P9G) [2**Thermos - Stainless King Red Travel Flask (1.2L) - Premium Leak Proof Insulated Tea & Coffee Flask for Hot & Cold Drinks Built-in Cup Twist-Pour Stopper BPA-Free Durable Steel**Thermos**£19.16**4.7★24,566 rev](https://www.amazon.co.uk/dp/B00D4EFAOK) [3**Thermos Stainless King 470ml Multi-Purpose Thermos Flask - Original-Style Flask can be used as Travel Mug or Insulated Water Bottle for Daily Commute & Weekend Adventures Matt Black**Thermos**£14.29**4.7★5,636 rev](https://www.amazon.co.uk/dp/B00JOV3Z6W) [4**ThermoCafe Stainless Steel 500ml Flask**Thermos**£8.24**4.6★22,004 rev](https://www.amazon.co.uk/dp/B000TASOEK) [5**THERMOcafè by THERMOS Stainless Steel Flask Multi-colour 1.0 Litre**Thermos**£11.97**4.6★22,004 rev](https://www.amazon.co.uk/dp/B000TAOWC8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Bargain Factory Water Flask Double Walled Vacuum Insulated Flask 500ml Leakproof 24 Hours Hot and Cold Water Bottle Durable Stainless-Steel Interior and Exterior Silver**BARGAIN FACTORY**£6.97**291 rev2y ago](https://www.amazon.co.uk/dp/B0CRDZWH9J) [**Water Bottle Otto Koning 1L - 1 Litre Stainless Steel Vacuum Insulated Flask - Keeps Cold 24h / Hot 12h - Large Leak Proof & BPA Free Metal Drinks Bottle for Gym Hiking & Sports**Otto Koning**£8.60**10,532 rev2y ago](https://www.amazon.co.uk/dp/B0CHHVVJ6C) [**QiCheng&LYS 500ML Travel Mug with Temperature Display 304 Stainless Steel Double Walled Vacuum Insulation Cup for Heat and Cold Water(Pink)**QiCheng&LYS**£10.10**1,236 rev5y ago](https://www.amazon.co.uk/dp/B08LZ3RVML) [**Contigo Byron SNAPSEAL Travel Mug 470 ml**Contigo**£8.07**23,825 rev7y ago](https://www.amazon.co.uk/dp/B07TRDWHXG) [**YJ&H Double Walled Vacuum Insulated Bottle with Cup - Stainless Steel Thermo Flask - Reusable Drinking Water Bottles BPA Free - for Kids & Adult Sports Outdoor Office - 650ml Champagne Gold**YJH**£10.55**4,998 rev7y ago](https://www.amazon.co.uk/dp/B07SN5877K)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Water Bottle Otto Koning 1L - 1 Litre Stainless Steel Vacuum Insulated Flask - Keeps Cold 24h / Hot 12h - Large Leak Proof & BPA Free Metal Drinks Bottle for Gym Hiking & Sports**Otto Koning**£8.60**4.6★**▲ 327%**](https://www.amazon.co.uk/dp/B0CHHVVJ6C) [**Thermos - Stainless King Midnight Blue Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask Hot & Cold Drinks Built-in Cup Twist-Pour Stopper BPA-Free Durable Steel**Thermos**£20.00**4.7★**▲ 163%**](https://www.amazon.co.uk/dp/B001ET6P9G) [**THERMOcafè by THERMOS Stainless Steel Flask Multi-colour 1.0 Litre**Thermos**£11.97**4.6★**▲ 129%**](https://www.amazon.co.uk/dp/B000TAOWC8) [**Thermos - Stainless King Gun Metal Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask for Hot & Cold Drinks Built-in Cup Twist-Pour Stopper BPA-Free Durable Steel**Thermos**£18.81**4.7★**▲ 126%**](https://www.amazon.co.uk/dp/B016UIYUD8) [**Thermos - Stainless King Duck Egg Travel Flask (1.2L) Premium Leak Proof Insulated Tea & Coffee Flask for Hot & Cold Drinks Built-in Cup Twist-Pour Stopper BPA-Free Durable Steel**Thermos**£19.97**4.7★**▲ 125%**](https://www.amazon.co.uk/dp/B077GZJ7JR)
**~~View all trending →~~**
## **What buyers say about thermos flask**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**21%
*“Good quality bottle”*
**Temperature Retention**18%
*“Keeps water cool as it states”*
**Value For Money**8%
*“Good Value”*
**Leak-Proof**7%
*“Does not leak”*
**Heating**6%
*“Keeps heat etc”*
**Size-Overall**5%
*“Good size”*
**Advertised Vs Actual Product**4%
*“As advertised”*
**Ease Of Use**3%
*“Easy to use”*
**Temperature Control**3%
*“Very good as all Thermos”*
**Durability**3%
*“Will not break”*
### **What buyers complain about **
**Heating**18%
*“doesn't retain heat well”*
**Leak-Proof**13%
*“this one leaks”*
**Quality-Overall**8%
*“Bad quality”*
**Durability**7%
*“it broke during first use”*
**Value For Money**7%
*“Ok just overpriced”*
**Size-Overall**5%
*“Small”*
**Advertised Vs Actual Product**3%
*“Not as advertised”*
**Temperature Retention**3%
*“doez not keep drinks hot at all”*
**Temperature Control**2%
*“Doesn't really keep the water at a hot temperature”*
**Ease Of Use**2%
*“difficult to hold”*
### **Top return reasons **
**Size-Overall**61%
**Leak-Proof**8%
**Heating**3%
**Weight Heavy**2%
**Defective Material/Parts**2%
**Color**2%
**Quality-Overall**2%
**Functionality-Overall**2%
**Value For Money**1%
**Temperature Control**1%
## **Common questions**
- **Is thermos flask profitable to sell on Amazon United Kingdom?**
- The niche generates £1.2M/yr across 34 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -22.9%. Flapen's verdict: Skip it (49/100).
- **How competitive is the thermos flask niche?**
- 15 brands and 95 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in thermos flask?**
- Top complaints mined from reviews: Heating, Leak-Proof, Quality-Overall. The return rate is 1.5%.
- **When does demand for thermos flask peak?**
- Demand peaks in Jan–Oct–Nov–Dec; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the thermos flask niche?**
- Listings span £6.97–£37.66; the average listing price is £15.87 (sweet spot $15–$100). The average incumbent carries 15,007 reviews — the moat a new listing must climb.
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