small double mattresses
Worth a lookShows a $5.6M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size
Incredible£5.6M£5.6M/yr · 2.4M searches
Returns
Great1.0%return rate — above 5% kills the launch gate
Competition
Great32%top-5 click share — an open shelf
Brand share
Great56%top-5 brand share — no brand owns this niche
Avg price
Good£125.88avg listing price — sweet spot $15–$100
Review moat
Good938.46avg incumbent reviews — the moat a new listing must climb
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Bad1.8%search→purchase rate — share of searches ending in a sale
Growth
Bad-14.6%90-day search growth — must beat 0% to launch
Price range
Bad£44.68–£459.21cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, small double mattresses is a £5.6M/yr Amazon United Kingdom market (2.4M searches/yr). The top 5 brands hold 56% of demand. Demand peaks in Jan–Feb–Mar–Apr–May–Jun–Dec. Verdict: Worth a look — 63/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
small double mattresses market data
- Units sold / yr
- 30K–40K
- avg 250–500/product
- Revenue / yr
- £3.8M–£5.0M
- units × avg price
- Conversion rate
- 1.8%
- Avg BSR
- #75
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 95%
- Out of stock
- 17.1%
- Avg brand age
- 43 months
- Avg seller age
- 178 days
Competition & brand share
Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.Brands
34 falling
Sellers
51
Top-5 brand share
56%
Top 20: 86%
Top-5 click share
32%
Top 20: 62%
Open market
41%
- dosleeps23%
- TeQsli18%
- Uliyati6%
- Twirest6%
- NIXNAP3%
- DAJIYUHC3%
Demand & seasonality
Weekly Amazon search volume, last 101 weeks — -14.6% search growth over the last 90 days.Peak months: Jan, Feb, Mar, Apr, May, Jun, Dec · busiest ÷ quietest = 27.4×
Top small double mattresses search terms
- king size mattress992K/yr
- super king mattress251K/yr
- small double mattress242K/yr
- kingsize mattress136K/yr
- king mattress114K/yr
- emma mattress113K/yr
- mattress king size86K/yr
- king size memory foam mattress64K/yr
- 4ft mattress54K/yr
- king-size mattress44K/yr
Top small double mattresses 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
dosleeps King Size Mattress 5FT | 10.6 Extra Thick Memory Foam & Pocket Sprung | 9-Zone Orthopedic Support Medium Firm Motion Isolation Edge Support 150x200x27cm
dosleeps£173.164.4★2,598 rev
dosleeps King Size Mattress 5FT | 10 Memory Foam & Pocket Sprung | 9-Zone Orthopedic Support Breathable Cover Motion Isolation Edge Support Medium Firm 150x200x25cm
dosleeps£178.034.5★3,412 rev
Uliyati King Size Mattresses 5FT 20CM Gel Memory Foam Mattress Breathable for Cool Sleep & Pressure Relief - Medium 150x200x20CM CertiPUR-US Certified
Uliyati£108.164.6★452 rev
Twirest King Size Mattress 5FT 150 x 200 x 22 cm Hybrid Memory Foam & Sprung Mattress Medium Firm Breathable Cover Mattress in a Box for UK King Bed
Twirest£107.474.5★904 rev
NIXNAP King Mattress 5FT 10 Inch Hybrid Mattress Gel Memory Foam & Individually Pocket Springs 9-Zone Orthopaedic Medium Firm for Pressure & Back Pain Relief 150x200x25 cm
NIXNAP£125.734.5★138 rev
Newest
by launch date
TeQsli King Size Mattress 5FT 10.6 Inch Gel Memory Foam Pocket Sprung Mattress Edge Support & Motion Isolation Spring Hybrid King Mattresses - Medium Firm Feel 150x200x27 cm
TeQsli£108.53964 rev
Vlyxo King Size Mattress 5FT 10 Inch Hybrid Mattress Gel Memory Foam & Individually Pocket Springs Motion Isolating Medium Firm Support Pressure Relief & Comfortable Sleep (150x200x25cm)
Vlyxo£135.4264 rev
Hiimgo Hybrid Mattresses-26CM King Mattress-Pocket Spring with Memory Foam Medium Firm Strengthen Edge Support with Motion Isolation-150x200x26CM
Hiimgo£110.28111 rev
NIXNAP King Mattress 5FT 10 Inch Hybrid Mattress Gel Memory Foam & Individually Pocket Springs 9-Zone Orthopaedic Medium Firm for Pressure & Back Pain Relief 150x200x25 cm
NIXNAP£125.73138 rev
dosleeps King Size Mattress 5FT | 10.6 Extra Thick Memory Foam & Pocket Sprung | 9-Zone Orthopedic Support Medium Firm Motion Isolation Edge Support 150x200x27cm
dosleeps£173.162,598 rev
Trending
90-day click momentumVlyxo King Size Mattress 5FT 10 Inch Hybrid Mattress Gel Memory Foam & Individually Pocket Springs Motion Isolating Medium Firm Support Pressure Relief & Comfortable Sleep (150x200x25cm)
Vlyxo£135.424.3★
TeQsli King Size Mattress 5FT 10.6 Inch Gel Memory Foam Pocket Sprung Mattress Edge Support & Motion Isolation Spring Hybrid King Mattresses - Medium Firm Feel 150x200x27 cm
TeQsli£108.534.5★
Doublelife King Size Mattress 5FT 9.85 Inch Gel Memory Foam 9 Zone Orthopedic Mattress Breathable Foam with Individually Pocket Spring Motion Isolation Edge Support(150x200x25cm)
Doublelife£163.464.1★
Emma Original Lite Mattress Double (135×190 cm) 22 cm Memory Foam & Pocket Springs Medium Firm Comfort & Support Moisture-Regulating Cover Rolled Delivery
Emma£257.974.0★
CBAEC-RSN King Size Mattress 5FT 10 Inch Gel Memory Foam 7 Zone Orthopedic King Mattress Pocket Sprungs Medium Plush Feel with Motion Isolating - Medium Firm 10-Year Support (150x200x25 cm)
CBAEC-RSN£108.394.6★
What buyers say about small double mattresses
What buyers praise and complain about, mined from review topics.What buyers love
“Extremely comfortable”
“Fairly priced”
“Great price to quality”
“Nice quality mattress”
“the materials are so soft”
“very thick mattress”
“fits the bed perfectly”
“I find the mattress doesnt sag easily”
“As advertised”
“easy to assemble its a dream”
What buyers complain about
“Poor quality bed”
“It does not provide the support or comfort that was advertised”
“Feels more expensive than than it is”
“I was expecting something much larger”
“Not memory foam”
“Doesnt last”
“Not as described”
“sinking badly in the middle”
“was so heavy”
“it's too soft for me”
Top return reasons
Common questions
- Is small double mattresses profitable to sell on Amazon United Kingdom?
- The niche generates £5.6M/yr across 63 tracked products. 18 of 22 products launched in the last 360 days are still selling. 90-day search growth is -14.6%. Flapen's verdict: Worth a look (63/100).
- How competitive is the small double mattresses niche?
- 34 brands and 51 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 56% of demand.
- What do buyers complain about in small double mattresses?
- Top complaints mined from reviews: Quality-Overall, Comfort-Overall, Value For Money. The return rate is 1.0%.
- When does demand for small double mattresses peak?
- Demand peaks in Jan–Feb–Mar–Apr–May–Jun–Dec; the busiest month runs 27.4× the quietest.
- What does it cost to enter the small double mattresses niche?
- Listings span £44.68–£459.21; the average listing price is £125.88 (sweet spot $15–$100). The average incumbent carries 938 reviews — the moat a new listing must climb.