---
title: "Waterproof Mattress Protector Small Double — £51K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/home-garden/waterproof-mattress-protector-small-double"
last_updated: "2026-07-31T12:23:32.553Z"
locale: en
meta:
description: "Niche score 38/100 · £51K/yr market · 33K searches/yr · £9.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 38/100 · £51K/yr market · 33K searches/yr · £9.57 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Waterproof Mattress Protector Small Double — £51K/yr Amazon UK Niche (2026) - Flapen"
---
# **waterproof mattress protector small double**
**Skip it**
Prices mostly outside the sweet spot ($5.81–$14.74) — this niche doesn't clear our bar today.
Market size 13Growth 18Conversion 98Competition 33Returns 96Price range 0Avg price 30Brand share 30Review moat 18Quality gap 35
**Conversion**
**Incredible****16.3%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.8%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****65%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****£9.57**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-14.9%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****17,200.73**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****£51K**
£51K/yr · 33K searches
**Price range**
**Bad****£5.81–£14.74**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, waterproof mattress protector small double is a £51K/yr Amazon United Kingdom market (33K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Jan. Verdict: Skip it — 38/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **waterproof mattress protector small double market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **£48K–£57K**
- units × avg price
- **Conversion rate**
- **16.3%**
- **Avg BSR**
- **#29**
- **Page quality**
- **0%**
- **Prime**
- **67%**
- **Sponsored**
- **87%**
- **Out of stock**
- **4.8%**
- **Avg brand age**
- **44 months**
- **Avg seller age**
- **191 days**
## **Competition & brand share**
The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**9 **▼falling
**Sellers**
**15**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**65%**
Top 20: 100%
**Open market**
**8%**
- Utopia Bedding32% - CAROLINE SHATUIK28% - Silentnight14% - ECOBIZ7% - IMFAA6% - ACRALI HOME5% - Open — no brand owns it (3 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 75 weeks — -14.9% search growth over the last 90 days.
800600Prime Day '25Spike '25Black Friday '25Spike '26 seasonMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Jan · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/uk/home-garden/waterproof-mattress-protector-small-double/trend)
## **Top waterproof mattress protector small double search terms**
- **small double waterproof mattress protector**15K/yr-6.2%14.7% conv. - **waterproof mattress protector small double**13K/yr-24.5%12.6% conv. - **small double mattress protector waterproof**5K/yr-16.3%17.0% conv. [**All search terms **](https://flapen.com/research/uk/home-garden/waterproof-mattress-protector-small-double/search-terms)
## **Top waterproof mattress protector small double 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%£5K20%£10K30%£15K40%£21K101001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Caroline Shatuik 100% Waterproof Mattress Protector Small Double Anti Allergy Fitted Sheet Style Small Double Mattress Protector Bed Topper Cover(4ft/122x190+30cm)**CAROLINE SHATUIK**£8.23**4.5★11,349 rev](https://www.amazon.co.uk/dp/B09TTY6QR2) [2**Waterproof Mattress Protector Small Double Bed 120 x 190 cm Fits Up to 30 cm Deep Mattresses Premium Terry Mattress Protector All Around Elastic by Utopia Bedding**Utopia Bedding**£6.95**4.6★108,982 rev](https://www.amazon.co.uk/dp/B09Q5FMR9Y) [3**Silentnight Waterproof Mattress Protector Small Double - Quiet Rustle Free Waterproof Resistant Sheet Moisture Proof Mattress Pad Cover - Machine Washable and Hypoallergenic - Small Double 4ft**Silentnight**£12.90**4.5★3,713 rev](https://www.amazon.co.uk/dp/B09Q6C22XT) [4**Utopia Bedding Waterproof Strap Mattress Protector Small Double Bed 120 x 190 cm White Fits Up to 30cm Deep Mattresses Premium Terry Mattress Protector 4 Side Elastic Strap Mattress Cover**Utopia Bedding**£5.81**4.3★11,722 rev](https://www.amazon.co.uk/dp/B0CLCZR5SW) [5**ECOBIZ Cotton Small Double Mattress Protector Fitted Waterproof Sheet Washable Super Absorbent Anti Allergy 3/4 Waterproof Mattress Protector Small Double Bed Cover Non-Noisy 4FT Mattress Protector**ECOBIZ**£9.40**4.4★7,424 rev](https://www.amazon.co.uk/dp/B09X1BX8GG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ELOVELA 100% Waterproof Small Double Mattress Protector 40cm Extra Deep Fitted Stretch Skirt Breathable & Hypoallergenic Mattress Cover for Ultimate Comfort Machine Washable - (122 x 190cm)**ELOVELA**£13.97**38 rev6mo ago](https://www.amazon.co.uk/dp/B0GHYWQR6G) [**ELITLUX 100% Waterproof Mattress Protector Noiseless Absorbent & Machine Washable Small Double Mattress Protector (122x190cm) With Extra Deep 30cm Fitted Skirt**ELITLUX**£14.74**53 rev6mo ago](https://www.amazon.co.uk/dp/B0FTVTPV97) [**LOOMERIG 100% Waterproof Mattress Protector Small Double Bed Extra Deep 40cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (White 122x190cm)**LOOMERIG**£13.25**59 rev9mo ago](https://www.amazon.co.uk/dp/B0FYQ7YFP9) [**Acrali Home Quilted Deep Fitted Waterproof Small Double Mattress Protector**ACRALI HOME**£10.26**298 rev1y ago](https://www.amazon.co.uk/dp/B0DNQT2SQC) [**Utopia Bedding Waterproof Strap Mattress Protector Small Double Bed 120 x 190 cm White Fits Up to 30cm Deep Mattresses Premium Terry Mattress Protector 4 Side Elastic Strap Mattress Cover**Utopia Bedding**£5.81**11,722 rev2y ago](https://www.amazon.co.uk/dp/B0CLCZR5SW)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ELOVELA 100% Waterproof Small Double Mattress Protector 40cm Extra Deep Fitted Stretch Skirt Breathable & Hypoallergenic Mattress Cover for Ultimate Comfort Machine Washable - (122 x 190cm)**ELOVELA**£13.97**4.7★**▲ 243%**](https://www.amazon.co.uk/dp/B0GHYWQR6G) [**ELITLUX 100% Waterproof Mattress Protector Noiseless Absorbent & Machine Washable Small Double Mattress Protector (122x190cm) With Extra Deep 30cm Fitted Skirt**ELITLUX**£14.74**4.6★**▲ 205%**](https://www.amazon.co.uk/dp/B0FTVTPV97) [**IMFAA Bamboo Water Proof Mattress Protector Topper cover Extra Deep Fitted 40 CM Depth Breathable Antialergy Non Noisy Bug Proof (Small Double-4FT(122x190+40) cm)**IMFAA**£8.68**4.6★**▲ 197%**](https://www.amazon.co.uk/dp/B0DV5MQ96Z) [**LOOMERIG 100% Waterproof Mattress Protector Small Double Bed Extra Deep 40cm Fitted Skirt Breathable & Anti-Allergy Mattress Cover for Ultimate Comfort (White 122x190cm)**LOOMERIG**£13.25**4.8★**▲ 126%**](https://www.amazon.co.uk/dp/B0FYQ7YFP9) [**IMFAA 100% Water & Moisture Proof Extra Deep Terry Towel Mattress Protector Topper Cover Anti Allergy and Breathable. (White Cot(60x120x15) FBA)**IMFAA**£6.70**4.5★**▲ 52%**](https://www.amazon.co.uk/dp/B07M8VL1GR)
**~~View all trending →~~**
## **What buyers say about waterproof mattress protector small double**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Great quality & the feel is comfort, theres no slipping & sliding around like the cheap ones”*
**Size-Overall**12%
*“Fits well”*
**Value For Money**12%
*“Worth the money”*
**Advertised Vs Actual Product**11%
*“True to picture”*
**Water Resistance**8%
*“really water proof”*
**Noise Level**5%
*“this one stays quiet”*
**Comfort-Overall**3%
*“comfortable”*
**Soft Feel**2%
*“It feels soft”*
**Ease Of Cleaning**2%
*“Very effective for a bed wetting toddler”*
**Security**2%
*“Mattress protection”*
### **What buyers complain about **
**Water Resistance**24%
*“they are no longer waterproof”*
**Quality-Overall**10%
*“Poor quality”*
**Thickness**7%
*“Thin”*
**Noise Level**5%
*“A little noisier than I expected”*
**Value For Money**5%
*“But price should be £3/£4 pounds less”*
**Size-Overall**5%
*“SINGLE SIZE IS VERY SMALL”*
**Comfort-Overall**4%
*“its not very comfortable you definitely need another cover onto to make it feel less plastic”*
**Moist/Dry**4%
*“Wet went straight through”*
**Functionality-Overall**4%
*“Doesnt work”*
**Ease Of Use**2%
*“it was quite a struggle getting it on”*
### **Top return reasons **
**Size-Overall**65%
**Quality-Overall**7%
**Material Quality**6%
**Water Resistance**3%
**Advertised Vs Actual Product**3%
**Noise Level**2%
**Thin**2%
**Thickness**2%
**Functionality-Overall**1%
**Leak-Proof**1%
## **Common questions**
- **Is waterproof mattress protector small double profitable to sell on Amazon United Kingdom?**
- The niche generates £51K/yr across 15 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -14.9%. Flapen's verdict: Skip it (38/100).
- **How competitive is the waterproof mattress protector small double niche?**
- 9 brands and 15 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in waterproof mattress protector small double?**
- Top complaints mined from reviews: Water Resistance, Quality-Overall, Thickness. The return rate is 0.8%.
- **When does demand for waterproof mattress protector small double peak?**
- Demand peaks in Jan; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the waterproof mattress protector small double niche?**
- Listings span £5.81–£14.74; the average listing price is £9.57 (sweet spot $15–$100). The average incumbent carries 17,201 reviews — the moat a new listing must climb.
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