king size duvet
Worth a lookShows low returns (0.3%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.3%return rate — above 5% kills the launch gate
Market size
Incredible£2.0M£2.0M/yr · 1.7M searches
Price range
Great£11.21–£59.17cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great£19.14avg listing price — sweet spot $15–$100
Conversion
Good6.3%search→purchase rate — share of searches ending in a sale
Competition
Good49%top-5 click share — leaders hold, buyers still browse
Brand share
Okay80%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad13,645.1avg incumbent reviews — the moat a new listing must climb
Growth
Bad-19.5%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, king size duvet is a £2.0M/yr Amazon United Kingdom market (1.7M searches/yr). The top 5 brands hold 80% of demand. Demand peaks in Jan–Sep–Oct–Nov. Verdict: Worth a look — 60/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
king size duvet market data
- Units sold / yr
- 80K–100K
- avg 2,000–2,500/product
- Revenue / yr
- £1.5M–£1.9M
- units × avg price
- Conversion rate
- 6.3%
- Avg BSR
- #25
- Page quality
- 0%
- Prime
- 40%
- Sponsored
- 83%
- Out of stock
- 0.2%
- Avg brand age
- 59 months
- Avg seller age
- 187 days
Competition & brand share
The top 5 products take 49% of clicks — established leaders, but buyers still shop beyond them.Brands
14 rising
Sellers
46
Top-5 brand share
80%
Top 20: 100%
Top-5 click share
49%
Top 20: 87%
Open market
17%
- Slumberdown39%
- Silentnight16%
- Utopia Bedding14%
- Siebenschläfer6%
- Casabella5%
- MH Home3%
- Open — no brand owns it (8 brands, 17%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -19.5% search growth over the last 90 days.Peak months: Jan, Sep, Oct, Nov · busiest ÷ quietest = 2.5×
Top king size duvet search terms
- king size duvet852K/yr
- duvet king size309K/yr
- king duvet94K/yr
- kingsize duvet70K/yr
- king size quilt50K/yr
- king size duvet 10.5 tog56K/yr
- cotton duvet29K/yr
- duvets king size27K/yr
- queen size duvet25K/yr
- duvet kings size22K/yr
Top king size duvet 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Slumberdown Cosy Nights King Size Duvet 10.5 Tog - Breathable & Soft All Year-Round King Quilt for Summer Autumn & Winter | UK-Made Non-Allergenic & Washable (225 x 220cm)
Slumberdown£17.144.6★9,619 rev
Utopia Bedding Coverless King Size Duvet 10.5 Tog Box Stitched Design White
Utopia Bedding£11.444.5★81,539 rev
Silentnight Deep Sleep King Size Duvet 10.5 Tog All Year Round Soft and Comfortable Quilt Duvet Ideal for Spring Summer Autumn and Winter Hypoallergenic and Machine Washable 225x220cm - King
Silentnight£23.164.7★21,571 rev
Slumberdown Cool Summer Nights 4.5 Tog King Size Duvet - Lightweight & Breathable UK Made King Size Quilt Non-Allergenic & Washable | Perfect Summer Duvet for Hot Nights (225 x 220cm)
Slumberdown£15.424.5★2,990 rev
Casabella King Size Duvet 13.5 Tog - Premium Quality King Duvet for Year-Round Comfort - Soft Touch Cover Hypoallergenic Machine Washable - (230cm x 220cm)
Casabella£15.954.5★558 rev
Newest
by launch date
Rohi Anti Allergy King Size Duvet 10.5 Tog All Season Duvets Soft & Breathable Luxurious Hollowfibre Quilt with Corvin Cover Midweight Comforter King Bed Duvet (All Season)
Rohi£14.382,816 rev
MH Home King Duvet 13.5 Tog All Season Comforter Lightweight Skin Friendly Quilt Down Alternative Ultra-Soft Plush Breathable Duvet (13.5 Tog King)
MH Home£15.0494 rev
Quality Beddings King Duvet 10.5 Tog | Breathable Duvets for All Year Round Comfort | Anti-allergy Duvet with Hollowfibre Filling | Hypoallergenic Made in UK Quilt (King 230x220cm)
Quality Beddings£13.34231 rev
Casabella King Size Duvet 13.5 Tog - Premium Quality King Duvet for Year-Round Comfort - Soft Touch Cover Hypoallergenic Machine Washable - (230cm x 220cm)
Casabella£15.95558 rev
BedLooms Summer Duvet King Size 4.5 Tog Antiallergic Hollowfiber Filling Quilt Skin Friendly king Size Duvet 230 cm x 220 cm - UK Made Duvets
BedLooms£11.33511 rev
Trending
90-day click momentumBedLooms Summer Duvet King Size 4.5 Tog Antiallergic Hollowfiber Filling Quilt Skin Friendly king Size Duvet 230 cm x 220 cm - UK Made Duvets
BedLooms£11.334.4★
Siebenschläfer Light Summer Duvet (4.5 Tog King Size)
Siebenschläfer£19.334.7★
Slumberdown Cool Summer Nights 4.5 Tog King Size Duvet - Lightweight & Breathable UK Made King Size Quilt Non-Allergenic & Washable | Perfect Summer Duvet for Hot Nights (225 x 220cm)
Slumberdown£15.424.5★
Quality Beddings King Duvet 10.5 Tog | Breathable Duvets for All Year Round Comfort | Anti-allergy Duvet with Hollowfibre Filling | Hypoallergenic Made in UK Quilt (King 230x220cm)
Quality Beddings£13.344.3★
MH Home King Duvet 13.5 Tog All Season Comforter Lightweight Skin Friendly Quilt Down Alternative Ultra-Soft Plush Breathable Duvet (13.5 Tog King)
MH Home£15.044.0★
What buyers say about king size duvet
What buyers praise and complain about, mined from review topics.What buyers love
“Best Quality”
“Good price”
“Keeps you warm”
“Lightweight and easy to handle”
“Very comfortable”
“material is soft”
“Fits well”
“Stitching is really good”
“As advertised”
“Good thick duvet”
What buyers complain about
“Poor quality control”
“Doesnt seem half as thick as the others. same tog”
“this isnt worth the money”
“this is not warm enough for me in winter”
“the poor stitching”
“There was also a large stain”
“Bit bigger”
“It's false advertising”
“Made from that cheap fibrous stiff cotton outer”
“Not breathable”
Top return reasons
Common questions
- Is king size duvet profitable to sell on Amazon United Kingdom?
- The niche generates £2.0M/yr across 30 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -19.5%. Flapen's verdict: Worth a look (60/100).
- How competitive is the king size duvet niche?
- 14 brands and 46 sellers compete. The top 5 products take 49% of clicks and top 5 brands hold 80% of demand.
- What do buyers complain about in king size duvet?
- Top complaints mined from reviews: Quality-Overall, Thickness, Value For Money. The return rate is 0.3%.
- When does demand for king size duvet peak?
- Demand peaks in Jan–Sep–Oct–Nov; the busiest month runs 2.5× the quietest.
- What does it cost to enter the king size duvet niche?
- Listings span £11.21–£59.17; the average listing price is £19.14 (sweet spot $15–$100). The average incumbent carries 13,645 reviews — the moat a new listing must climb.