super king size duvet
Worth a lookShows low returns (0.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Great£21.09avg listing price — sweet spot $15–$100
Price range
Great£9.36–£78.64cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Great34%top-5 click share — an open shelf
Conversion
Great7.6%search→purchase rate — share of searches ending in a sale
Market size
Okay£250K£250K/yr · 156K searches
Brand share
Okay78%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Bad12,460.06avg incumbent reviews — the moat a new listing must climb
Growth
Bad-31.3%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, super king size duvet is a £250K/yr Amazon United Kingdom market (156K searches/yr). The top 5 brands hold 78% of demand. Demand peaks in Jan–Sep–Oct–Nov–Dec. Verdict: Worth a look — 57/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
super king size duvet market data
- Units sold / yr
- 8K–10K
- avg 100–250/product
- Revenue / yr
- £169K–£211K
- units × avg price
- Conversion rate
- 7.6%
- Avg BSR
- #33
- Page quality
- 0%
- Prime
- 35%
- Sponsored
- 82%
- Out of stock
- 0.9%
- Avg brand age
- 57 months
- Avg seller age
- 187 days
Competition & brand share
Clicks spread well past the top 5 (34% combined) — an open shelf where new products get seen.Brands
20 rising
Sellers
33
Top-5 brand share
78%
Top 20: 100%
Top-5 click share
34%
Top 20: 77%
Open market
18%
- Slumberdown42%
- Silentnight15%
- Utopia Bedding10%
- Siebenschläfer7%
- Quality Beddings4%
- DN COLLECTION4%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -31.3% search growth over the last 90 days.Peak months: Jan, Sep, Oct, Nov, Dec · busiest ÷ quietest = 3.8×
Top super king size duvet search terms
- super king size duvet32K/yr
- super king quilt19K/yr
- super king duvet 10.5 tog20K/yr
- superking duvet 10.5 tog15K/yr
- 10.5 tog super king size duvet10K/yr
- super king duvet 13.5 tog17K/yr
- super kingsize duvet7K/yr
- duvet super king7K/yr
- super king duvet all seasons6K/yr
- super king size quilt4K/yr
Top super 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 Anti Allergy Super King Duvet 10.5 Tog - Allergy UK Approved All Year Round Quilt for Allergy Sufferers - Made in the UK Anti Bacterial and Machine Washable Bedding (260 x 220cm)
Slumberdown£19.144.6★53,320 rev
Slumberdown Cosy Nights Super King Duvet 10.5 Tog - Breathable & Soft All Year-Round Quilt for Summer Autumn & Winter | UK-Made Non-Allergenic & Washable (260 x 220cm)
Slumberdown£18.784.6★9,619 rev
Slumberdown Cosy Nights Double Duvet 10.5 Tog - Breathable & Soft All Year-Round Double Quilt for Summer Autumn & Winter | UK-Made Non-Allergenic & Washable (200 x 200cm)
Slumberdown£15.314.6★9,619 rev
Siebenschläfer Medium All Year Round Duvet (10.5 Tog Super-King Size)
Siebenschläfer£31.074.7★25,335 rev
Silentnight Hotel Collection 13.5 Tog Super King Duvet - Luxury Hotel Quality Winter Warm Cosy Duvet Quilt Ideal Cold Winter Nights - Hypoallergenic Machine Washable- 260x220cm - Super King
Silentnight£30.474.7★14,755 rev
Newest
by launch date
Extra Thick Anti Allergy Super King Duvet 15 Tog - Luxury Hotel Quality Hollowfibre Ultra Soft Cosy Skin Friendly Warm Winter Fluffy Quilt Soft Machine
NightNest£16.60247 rev
Pamposh Super King Duvet Set - Pre-Washed Microfibre Bedding Set for Added Softness & Comfort - Lightweight Premium Quilt Cover Set for All Seasons With Zipper Closure
Pamposh£12.31937 rev
Casabella Super King Duvet 13.5 Tog - Premium Quality Quilt for Year-Round Comfort - Soft Touch Cover Hypoallergenic Machine Washable Duvet Super King (220cm x 260cm)
Casabella£17.86558 rev
Slumberdown Feels Like Down Super King Duvet 10.5 Tog - Ultra Soft All-Year Round Single Quilt for Summer Autumn & Winter | UK Made Non-Allergenic & Washable (260 x 220cm)
Slumberdown£18.253,253 rev
Slumberdown Feels Like Down Super King Duvet 13.5 Tog - Ultra Soft Extra Warm & Snuggly Quilt for Cold Winter Nights | UK Made Non-Allergenic & Washable (260 x 220cm)
Slumberdown£19.853,253 rev
Trending
90-day click momentumSiebenschläfer Light Summer Duvet (4.5 Tog Super-King Size)
Siebenschläfer£26.594.7★
Quality Beddings Super King Duvet 10.5 Tog | Breathable Duvets for All Year Round Comfort | Anti-allergy Duvet with Hollowfibre Filling | Hypoallergenic Made in UK Quilt (Super King 260x220cm)
Quality Beddings£14.304.3★
DN COLLECTION Super King Duvet 10.5 Tog | Premium Microfibre Duvet Super King | All Year-Round Box Stitched Design Quilts | Soft Touch Anti-allergy & Feels Like Down Quilt (260x220cm)
DN COLLECTION£18.124.4★
Slumberdown Anti Allergy Super King Duvet 4.5 Tog - Allergy UK Approved Lightweight Summer Duvet for Allergy Sufferers - Made in the UK Anti Bacterial & Machine Washable Quilt (260 x 220cm)
Slumberdown£16.424.6★
Extra Thick Anti Allergy Super King Duvet 15 Tog - Luxury Hotel Quality Hollowfibre Ultra Soft Cosy Skin Friendly Warm Winter Fluffy Quilt Soft Machine
NightNest£16.604.3★
What buyers say about super king size duvet
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality and exactly as described”
“keeps you warm”
“Worth the money”
“comfortable to use”
“material is soft”
“nice size”
“lightweight on the bed”
“As described”
“Perfect balance between thick and not thick, Keeps me warm”
“cool the fabric is”
What buyers complain about
“Not well made”
“Wrong size”
“Bit thinner than the bulky 10.5 tog i had”
“this isnt worth the money”
“was sad it was microfibre not cotton covered”
“Not comfortable for me”
“not very warm had to use a throw on top of the duvet to keep the cold out”
“Not as described”
“it consistently bunched up due to the stitching being too far apart”
“Even though the duvet is lovely it came with stains on”
Top return reasons
Common questions
- Is super king size duvet profitable to sell on Amazon United Kingdom?
- The niche generates £250K/yr across 49 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -31.3%. Flapen's verdict: Worth a look (57/100).
- How competitive is the super king size duvet niche?
- 20 brands and 33 sellers compete. The top 5 products take 34% of clicks and top 5 brands hold 78% of demand.
- What do buyers complain about in super king size duvet?
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Thickness. The return rate is 0.4%.
- When does demand for super king size duvet peak?
- Demand peaks in Jan–Sep–Oct–Nov–Dec; the busiest month runs 3.8× the quietest.
- What does it cost to enter the super king size duvet niche?
- Listings span £9.36–£78.64; the average listing price is £21.09 (sweet spot $15–$100). The average incumbent carries 12,460 reviews — the moat a new listing must climb.