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Kingsize Mattress

prices mostly outside the sweet spot ($96.59–$320.37) — Kingsize Mattress doesn't clear our bar today.

Flapen Score

48
Skip it

Ranks 3,444 of 5,777 Home & Garden niches · −3 vs the category median of 51

Market size 24Growth 17Conversion 16Competition 77Returns 90Price range 2Avg price 61Brand share 83Review moat 72Quality gap 52
This niche Category average · 5,777 niches

Is Kingsize Mattress profitable on Amazon?

According to Flapen's Amazon United Kingdom niche tracking, Kingsize Mattress is a £98K/yr Amazon United Kingdom market (53K searches/yr). The top 5 brands hold 52% of demand. Demand peaks in Oct–Nov. Verdict: Skip it — 48/100.

Kingsize Mattress: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -16.4% over the last 90 days and 1.3% of searches end in a purchase.

£98K

revenue / yr

Units sold / yr750
Search volume / yr-16.4%53K
Conversion rate1.3%
Avg price£143.31

Who owns the niche?

The top 5 brands hold 52% of demand, so 48% of the market is open.

48%

open market share

Brands · sellers29 · 43
Top-5 product click share38%
Open market48%
Avg brand age32 months

Is there a way in?

Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.

0/100

page quality · 50 products

Sponsored placement98%
New entrants (1y)21· 20 succeeded
Avg rating4.4★
Avg reviews637

Top Kingsize Mattress 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

Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.

£0£4K£8K£12K£16K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

29 falling

Sellers

43

Top-5 brand share

52%

Top 20: 92%

Top-5 click share

38%

Top 20: 71%

Open market

43%

  • dosleeps21%
  • Uliyati11%
  • TeQsli10%
  • NOFFA6%
  • slily5%
  • SEZMOONSI5%

Kingsize Mattress demand & seasonality

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

Volume53KCVR1.3%Products50Brands29Top 5 Brands52%OOS Rate16.7%Rating4.4★Reviews637Avg BSR#93
4K3KSpike '24Holiday '24Spike '25Prime Day '25Black Friday '25DecMarJunAugNovMarMay

Peak months: Oct, Nov · busiest ÷ quietest = 2.6×

Top Kingsize Mattress search terms shoppers use

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

  • kingsize memory foam mattress5K/yr
  • hybrid mattress king3K/yr
  • king size orthopaedic mattress memory foam4K/yr
  • king size extra firm mattress5K/yr
  • amazon king size mattress6K/yr
  • king size memory foam mattresses5K/yr
  • simba mattress king size uk5K/yr
  • king size hybrid mattress medium firm4K/yr
  • silent night king size mattresses3K/yr
  • medium king size hybrid mattress3K/yr

What reviews say buyers love and hate about Kingsize Mattress

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

What buyers love

90% of reviews
Comfort-Overall35%

Comfortable and supportive

Value For Money15%

Money well spent

Quality-Overall15%

Excellent quality mattress

Foam12%

Good firm mattress

Soft Feel5%

Its soft

What buyers complain about

58% of reviews
Comfort-Overall10%

It does not provide the support or comfort that was advertised

Quality-Overall10%

Debatable quality so far

Hard Feel6%

To hard for a mattress

Advertised Vs Actual Product5%

Not as described

Durability5%

Fault after a few months use

Kingsize Mattress return rate & reasons

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

1.3%

Return rate

37%

Fixable by listing

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

1Size-Overall
25%
2Comfort-Overall
22%
3Quality-Overall
11%
4Soft Feel
7%
5Advertised Vs Actual Product
6%

Common Kingsize Mattress questions

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

Flapen scores Kingsize Mattress 48/100 on Amazon United Kingdom — Skip it. The niche generates £98K/yr across 50 tracked products. 20 of 21 products launched in the last 360 days are still selling. Search demand moved -16.4% over the last 90 days.
Search demand for Kingsize Mattress on Amazon United Kingdom peaks in Oct–Nov, where the busiest month runs 2.6× the quietest.