---
title: "Super King Mattress Protectors — £405K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/super-king-mattress-protectors"
last_updated: "2026-07-31T18:28:42.253Z"
locale: en
meta:
description: "Niche score 52/100 · £405K/yr market · 219K searches/yr · £13.90 avg price. Soft demand (-17.8% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · £405K/yr market · 219K searches/yr · £13.90 avg price. Soft demand (-17.8% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Super King Mattress Protectors — £405K/yr Amazon UK Niche (2026) - Flapen"
---
# **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.
Market size 56Growth 16Conversion 96Competition 38Returns 96Price range 58Avg price 66Brand share 48Review moat 17Quality gap 40
**Conversion**
**Incredible****13.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.8%**
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**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Bad****18,244.17**
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 ~~](https://flapen.com/research/methodology)
## **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**
**23**
**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.
6K4KSpike '24Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/uk/home-garden/super-king-mattress-protectors/trend)
## **Top super king mattress protectors search terms**
- **super king mattress protectors**76K/yr-15.9%12.5% conv. - **superking mattress protectors**57K/yr-16.6%13.2% conv. - **mattress protector super king size**32K/yr-17.4%10.8% conv. - **super king mattress protector**20K/yr-29.4%10.9% conv. - **super king size mattress protector**14K/yr-8.4%10.5% conv. - **super king mattress cover**6K/yr-15.1%4.1% conv. - **superking mattress protector**7K/yr-28.1%12.2% conv. - **mattress protector super king**7K/yr-20.2%8.1% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/super-king-mattress-protectors/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.
0%10%£41K20%£81K30%£122K40%£162K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**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**£10.08**4.5★15,783 rev](https://www.amazon.co.uk/dp/B07T3DJMT5) [2**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**£10.71**4.5★11,349 rev](https://www.amazon.co.uk/dp/B09TTRXLV2) [3**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**£11.55**4.6★555 rev](https://www.amazon.co.uk/dp/B0DHD2XB96) [4**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**£9.43**4.5★157,536 rev](https://www.amazon.co.uk/dp/B08BG6M84W) [5**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**£10.96**4.5★7,499 rev](https://www.amazon.co.uk/dp/B099PHQXFY)
**~~View all top sellers →~~**
### **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**£16.20**16 rev5mo ago](https://www.amazon.co.uk/dp/B0GMJDD1XJ) [**ELITLUX 100% Waterproof Mattress Protector Noiseless Absorbent & Machine Washable Super King Mattress Protectors (182x200cm) With Extra Deep 30cm Fitted Skirt**ELITLUX**£19.86**53 rev6mo ago](https://www.amazon.co.uk/dp/B0FTVWLBB6) [**LOOMERIG 100% Waterproof Mattress Protector Super King Size Extra Deep 40cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (White 182x200cm)**LOOMERIG**£15.82**59 rev9mo ago](https://www.amazon.co.uk/dp/B0FYQ8Z1BK) [**CASABLOOM Luxury Super King Mattress Protectors Quilted Noiseless Deep Fit 30cm Hypoallergenic & Ultra Soft Microfiber Mattress Protector for SuperKing Beds (White 183x200cm)**CASABLOOM**£17.41**44 rev11mo ago](https://www.amazon.co.uk/dp/B0FMJWWGQJ) [**Elite Essentials Super King Mattress Protectors Extra Deep 30cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (183x200cm)**ELITE ESSENTIALS**£13.58**63 rev1y ago](https://www.amazon.co.uk/dp/B0FJMDZRPW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**£16.20**4.2★**▲ 314%**](https://www.amazon.co.uk/dp/B0GMJDD1XJ) [**ELITLUX 100% Waterproof Mattress Protector Noiseless Absorbent & Machine Washable Super King Mattress Protectors (182x200cm) With Extra Deep 30cm Fitted Skirt**ELITLUX**£19.86**4.6★**▲ 294%**](https://www.amazon.co.uk/dp/B0FTVWLBB6) [**GRT Bamboo Waterproof Mattress Protector Super King - 3D Air Fiber Cooling Mattress Cover Breathable Ultra Soft Noiseless Mattress Protector with 40cm Extra Deep Skirt (Super King - 182 x 200cm)**GRT**£26.32**4.5★**▲ 178%**](https://www.amazon.co.uk/dp/B0F1DF8C4Q) [**Utopia Bedding Waterproof Mattress Protector Super King (180 x 200 x 30 cm) Soft & Breathable 3D Air Fabric Premium Noiseless Bed Mattress Cover Fitted Sheet Style Fits Up to 30 cm Deep**Utopia Bedding**£7.53**4.6★**▲ 153%**](https://www.amazon.co.uk/dp/B0D1VWPLPD) [**LOOMERIG 100% Waterproof Mattress Protector Super King Size Extra Deep 40cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (White 182x200cm)**LOOMERIG**£15.82**4.8★**▲ 147%**](https://www.amazon.co.uk/dp/B0FYQ8Z1BK)
**~~View all trending →~~**
## **What buyers say about super king mattress protectors**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**27%
*“Good quality, washable, waterproof, fast delivery”*
**Size-Overall**21%
*“Fits well”*
**Value For Money**9%
*“Good value”*
**Water Resistance**8%
*“Very water proof”*
**Comfort-Overall**8%
*“very comfy”*
**Advertised Vs Actual Product**4%
*“does the job”*
**Washability**2%
*“The quality still remains the same even after wash”*
**Noise Level**2%
*“doesn't make any noise when sleeping on it”*
**Foam**2%
*“good mattress protector”*
**Stretchability/Expandability/Elasticity**1%
*“Stays on the corners because of the elastic”*
### **What buyers complain about **
**Thickness**14%
*“not as thick as shown”*
**Size-Overall**13%
*“Bigger than I expected”*
**Water Resistance**11%
*“being taken out to dry - making it pointless as cant possibly be waterproof when there are holes all within the plasticy layer”*
**Quality-Overall**11%
*“Not the best”*
**Value For Money**4%
*“Not worth the money”*
**Durability**4%
*“Also feel easy to break”*
**Advertised Vs Actual Product**3%
*“not the same size as described”*
**Thin**3%
*“Too thin”*
**Washability**3%
*“Dont bother, ruined on wash two”*
**Comfort-Overall**2%
*“its not got much feeling to it”*
### **Top return reasons **
**Size-Overall**36%
**Water Resistance**11%
**Material Quality**11%
**Quality-Overall**9%
**Noise Level**7%
**Thin**5%
**Advertised Vs Actual Product**3%
**Thickness**2%
**Stain Resistance**2%
**Functionality-Overall**1%
## **Common questions**
- **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.
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