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Thermos Flask

soft demand (-22.9% this quarter) — Thermos Flask doesn't clear our bar today.

Flapen Score

49
Skip it
Market size 81Growth 14Conversion 32Competition 54Returns 85Price range 74Avg price 77Brand share 26Review moat 19Quality gap 40
This niche Category average

Is Thermos Flask profitable on Amazon?

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.

Thermos Flask: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -22.9% over the last 90 days and 2.6% of searches end in a purchase.

£1.2M

revenue / yr

Units sold / yr80K
Search volume / yr-22.9%2.9M
Conversion rate2.6%
Avg price£15.87

Who owns the niche?

The top 5 brands hold 89% of demand, so 11% of the market is open.

11%

open market share

Brands · sellers15 · 95
Top-5 product click share52%
Open market11%
Avg brand age46 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.

0/100

page quality · 34 products

Sponsored placement79%
New entrants (1y)1· 0 succeeded
Avg rating4.5★
Avg reviews15,007

Top Thermos Flask products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

£0£47K£94K£141K£188K1001K10K100K1.0M Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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%)

Thermos Flask demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume2.9MCVR2.6%Products34Brands15Top 5 Brands89%OOS Rate0.0%Rating4.5★Reviews15,007Avg BSR#90
125K75KSpike '24Black Friday '24Prime Day '25Spike '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 2.4×

Top Thermos Flask search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • thermos flask779K/yr
  • flask658K/yr
  • flask for hot drink408K/yr
  • thermos341K/yr
  • flasks for hot and cold drinks70K/yr
  • hot water flask75K/yr
  • thermal flask79K/yr
  • stainless steel flask25K/yr
  • flasks61K/yr
  • thermos flask for hot drinks52K/yr

What reviews say buyers love and hate about Thermos Flask

What buyers mention most, as a share of all reviews.

What buyers love

78% of reviews
Quality-Overall21%

Good quality bottle

Temperature Retention18%

Keeps water cool as it states

Value For Money8%

Good Value

Leak-Proof7%

Does not leak

Heating6%

Keeps heat etc

What buyers complain about

67% of reviews
Heating18%

doesn't retain heat well

Leak-Proof13%

this one leaks

Quality-Overall8%

Bad quality

Durability7%

it broke during first use

Value For Money7%

Ok just overpriced

Thermos Flask return rate & reasons

Why buyers send it back, as a share of all return requests.

1.5%

Return rate

74%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
61%
2Leak-Proof
8%
3Heating
3%
4Weight Heavy
2%
5Defective Material/Parts
2%

Common Thermos Flask questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Thermos Flask 49/100 on Amazon United Kingdom — Skip it. The niche generates £1.2M/yr across 34 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved -22.9% over the last 90 days.
Search demand for Thermos Flask on Amazon United Kingdom peaks in Jan–Oct–Nov–Dec, where the busiest month runs 2.4× the quietest.