Is super king mattress protectors profitable to sell on Amazon United Kingdom?

The niche generates £405K/yr across 23 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -17.8%. Flapen's verdict: Worth a look (52/100).

How competitive is the super king mattress protectors niche?

15 brands and 23 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 76% of demand.

What do buyers complain about in super king mattress protectors?

Top complaints mined from reviews: Thickness, Size-Overall, Water Resistance. The return rate is 0.8%.

When does demand for super king mattress protectors peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the super king mattress protectors niche?

Listings span £6.80–£26.32; the average listing price is £13.90 (sweet spot $15–$100). The average incumbent carries 18,244 reviews — the moat a new listing must climb.

super king mattress protectors

Worth a look

Shows searches that convert (13.3% search→purchase), but soft demand (-17.8% this quarter) keeps it on the watch list.

Conversion

Incredible13.3%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.8%

return rate — above 5% kills the launch gate

Avg price

Good£13.90

avg listing price — sweet spot $15–$100

Price range

Good£6.80–£26.32

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good£405K

£405K/yr · 219K searches

Brand share

Okay76%

top-5 brand share — brands hold most of the demand

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Competition

Okay62%

top-5 click share — leaders hold, buyers still browse

Review moat

Bad18,244.17

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-17.8%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon United Kingdom niche tracking, super king mattress protectors is a £405K/yr Amazon United Kingdom market (219K searches/yr). The top 5 brands hold 76% of demand. Verdict: Worth a look — 52/100.

Data updated Jul 28, 2026 · scored weekly · How we score niches

super king mattress protectors market data

Units sold / yr: 25K–30K; avg 1,500–2,000/product
Revenue / yr: £348K–£417K; units × avg price
Conversion rate: 13.3%
Avg BSR: #43
Page quality: 0%
Prime: 74%
Sponsored: 96%
Out of stock: 1.4%
Avg brand age: 49 months
Avg seller age: 186 days

Competition & brand share

The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.

Brands

15 rising

Sellers

Top-5 brand share

76%

Top 20: 100%

Top-5 click share

62%

Top 20: 96%

Open market

19%

IMFAA29%
CAROLINE SHATUIK19%
Utopia Bedding14%
Oliver Bedding8%
Silentnight6%
4AS5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -17.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top super king mattress protectors search terms

super king mattress protectors76K/yr -15.9%12.5% conv.
superking mattress protectors57K/yr -16.6%13.2% conv.
mattress protector super king size32K/yr -17.4%10.8% conv.
super king mattress protector20K/yr -29.4%10.9% conv.
super king size mattress protector14K/yr -8.4%10.5% conv.
super king mattress cover6K/yr -15.1%4.1% conv.
superking mattress protector7K/yr -28.1%12.2% conv.
mattress protector super king7K/yr -20.2%8.1% conv.

All search terms

Top super king mattress protectors 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 23 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

IMFAA Quilted Super King Mattress Protector & Mattress Topper Soft Breathable Quilted Pad Extra Deep 40cm Fitted Stretch Skirt Anti-Allergy Noiseless Bed Cover Machine Washable (182x200+40) Cm

IMFAA£10.084.5★15,783 rev

Caroline Shatuik100% Waterproof Mattress Protector Super King-40cm Extra Deep Fitted Terry Towel Mattress Topper Non Noisy Ani Allergy Mattress Cover Super king(182 x 200+40cm)

CAROLINE SHATUIK£10.714.5★11,349 rev

Oliver Bedding Quilted Super King Mattress Protector(182 x 200 cm) Waterproof Mattress Protector Super King Bed Fits Mattresses up to 30cm Deep Breathable Bed Mattresses Cover - White

Oliver Bedding£11.554.6★555 rev

Utopia Bedding Quilted Mattress Topper Superking Bed Mattress Protector Cover Quilted Pad Soft Breathable Deep Fitted Elastic Super King 180 x 200 + 38 cm White

Utopia Bedding£9.434.5★157,536 rev

Caroline Shatuik Super king Mattress Protectors fitted Quilted Extra Deep 40cm Stretch Skirt Anti Allergy-Mattress Topper Cover(182 x 200) Not-Waterproof

CAROLINE SHATUIK£10.964.5★7,499 rev

Newest

by launch date

UNIVERSAL COMFORT Quilted Super King Mattress Protectors Extra Deep 40cm Fitted Stretch Skirt - Breathable & Anti-Allergy Mattress Cover For Ultimate Comfort (Super King 180x200cm)

UNIVERSAL COMFORT£16.2016 rev

5mo ago

ELITLUX 100% Waterproof Mattress Protector Noiseless Absorbent & Machine Washable Super King Mattress Protectors (182x200cm) With Extra Deep 30cm Fitted Skirt

ELITLUX£19.8653 rev

6mo ago

LOOMERIG 100% Waterproof Mattress Protector Super King Size Extra Deep 40cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (White 182x200cm)

LOOMERIG£15.8259 rev

9mo ago

CASABLOOM Luxury Super King Mattress Protectors Quilted Noiseless Deep Fit 30cm Hypoallergenic & Ultra Soft Microfiber Mattress Protector for SuperKing Beds (White 183x200cm)

CASABLOOM£17.4144 rev

11mo ago

Elite Essentials Super King Mattress Protectors Extra Deep 30cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (183x200cm)

ELITE ESSENTIALS£13.5863 rev

1y ago

What buyers say about super king mattress protectors

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall27%

“Good quality, washable, waterproof, fast delivery”

Size-Overall21%

“Fits well”

Value For Money9%

“Good value”

Water Resistance8%

“Very water proof”

Comfort-Overall8%

“very comfy”

Advertised Vs Actual Product4%

“does the job”

Washability2%

“The quality still remains the same even after wash”

Noise Level2%

“doesn't make any noise when sleeping on it”

Foam2%

“good mattress protector”

Stretchability/Expandability/Elasticity1%

“Stays on the corners because of the elastic”

What buyers complain about

Thickness14%

“not as thick as shown”

Size-Overall13%

“Bigger than I expected”

Water Resistance11%

“being taken out to dry - making it pointless as cant possibly be waterproof when there are holes all within the plasticy layer”

Quality-Overall11%

“Not the best”

Value For Money4%

“Not worth the money”

Durability4%

“Also feel easy to break”

Advertised Vs Actual Product3%

“not the same size as described”

Thin3%

“Too thin”

Washability3%

“Dont bother, ruined on wash two”

Comfort-Overall2%

“its not got much feeling to it”

Top return reasons

Size-Overall36%

Water Resistance11%

Material Quality11%

Quality-Overall9%

Noise Level7%

Thin5%