---
title: "Waterproof Sheet — £122K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/baby-products/waterproof-sheet"
last_updated: "2026-08-11T10:16:35.445Z"
locale: en
meta:
description: "Niche score 50/100 · £122K/yr market · 223K searches/yr · £12.33 avg price. Soft demand (-4.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 50/100 · £122K/yr market · 223K searches/yr · £12.33 avg price. Soft demand (-4.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Waterproof Sheet — £122K/yr Amazon UK Niche (2026) - Flapen"
---
# **waterproof sheet**
**Worth a look**
Shows low returns (0.7%), but soft demand (-4.2% this quarter) keeps it on the watch list.
Market size 28Growth 23Conversion 54Competition 70Returns 96Price range 31Avg price 53Brand share 79Review moat 24Quality gap 35
**Returns**
**Incredible****0.7%**
return rate — above 5% kills the launch gate
**Brand share**
**Great****56%**
top-5 brand share — no brand owns this niche
**Competition**
**Good****43%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Good****4.4%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Good****£12.33**
avg listing price — sweet spot $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****£3.69–£20.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Okay****£122K**
£122K/yr · 223K searches
**Review moat**
**Bad****6,139.7**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-4.2%**
90-day search growth — must beat 0% to launch
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
According to Flapen's Amazon United Kingdom niche tracking, waterproof sheet is a £122K/yr Amazon United Kingdom market (223K searches/yr). The top 5 brands hold 56% of demand. Demand peaks in Sep. Verdict: Worth a look — 50/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **waterproof sheet market data**
- **Units sold / yr**
- **10K–13K**
- avg 250–500/product
- **Revenue / yr**
- **£123K–£154K**
- units × avg price
- **Conversion rate**
- **4.4%**
- **Avg BSR**
- **#16**
- **Page quality**
- **0%**
- **Prime**
- **88%**
- **Sponsored**
- **95%**
- **Out of stock**
- **0.8%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **182 days**
## **Competition & brand share**
The top 5 products take 43% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**27 **▲rising
**Sellers**
**39**
**Top-5 brand share**
**56%**
Top 20: 93%
**Top-5 click share**
**43%**
Top 20: 82%
**Open market**
**39%**
- CAROLINE SHATUIK20% - Hygge Supplies14% - Silentnight9% - Aydmed8% - GuardedSleep5% - IMFAA5%
## **Demand & seasonality**
Weekly Amazon search volume, last 92 weeks — -4.2% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonNovDecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Sep · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/uk/baby-products/waterproof-sheet/trend)
## **Top waterproof sheet search terms**
- **waterproof bed sheet**45K/yr+3.4%3.0% conv. - **waterproof sheet**46K/yr-2.3%3.3% conv. - **waterproof sheets for bed wetting**24K/yr-2.5%5.0% conv. - **waterproof bed protector**21K/yr-4.7%3.0% conv. - **bed protector waterproof**8K/yr-3.8%2.7% conv. - **waterproof sheets**11K/yr-14.1%2.5% conv. - **bed wetting mattress protector**9K/yr+9.9%3.2% conv. - **incontinence mattress protector**7K/yr-11.9%3.0% conv. - **waterproof bedding**6K/yr-19.6%1.5% conv. - **water proof bed protectors**5K/yr+5.1%3.4% conv. [**All search terms **](https://flapen.com/research/uk/baby-products/waterproof-sheet/search-terms)
## **Top waterproof sheet 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%4%£5K8%£10K12%£15K16%£20K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Caroline Shatuik Waterproof Mattress Protector Single 30cm Extra Deep Stretch Skirt Non-Noisy Terry Top Single Mattress Cover Single Bed(90 x 190cm)**CAROLINE SHATUIK**£6.85**4.5★11,289 rev](https://www.amazon.co.uk/dp/B09TNFJX22) [2**Silentnight Waterproof Mattress Protector Single - Quiet Rustle Free Waterproof Resistant Sheet Moisture Proof Mattress Pad Cover - Machine Washable and Hypoallergenic - Single**Silentnight**£9.14**4.5★7,987 rev](https://www.amazon.co.uk/dp/B08FRH3NFR) [3**2 x AYDMED Essential Washable Incontinence Bed Pads | For Single Beds | Maximum Absorbency 100% Leakproof Kylie Sheets | Reusable Waterproof Bed Wetting Sheets For Adults Children & Babies**Aydmed**£10.39**4.8★98 rev](https://www.amazon.co.uk/dp/B0FT8NHYSN) [4**Caroline Shatuik 100% Waterproof Mattress Protector Double-30cm Extra Deep Stretch Skirt Non-Noisy Terry Top Fitted Mattress Protector Double Bed Cover(137x190cm)**CAROLINE SHATUIK**£9.06**4.5★11,289 rev](https://www.amazon.co.uk/dp/B09TTWKQ3X) [5**Hygge Sheets Bamboo Organic Incontinence Bed Sheets for Adults & Kids | Single Beds | 100% Waterproof Bed Wetting Sheets | Bed Protectors for Incontinence | Reusable and Washable Bed Pad | UK Brand**Hygge Supplies**£20.00**4.6★1,222 rev](https://www.amazon.co.uk/dp/B0C3VM5SJY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WhyWorry Washable Incontinence Bed Sheets for Adults & Kids | 86 x 91 cm | for Single Bed | Waterproof Bed Wetting Mats | Reusable Bed Protectors | Pee Pads | Green | Pack of 2**WHYWORRY**£13.13**165 rev11mo ago](https://www.amazon.co.uk/dp/B0FK71KQZV) [**2 x PULP Essential Washable Incontinence Bed Pads | For Single Beds | Maximum Absorbency 100% Leakproof Kylie Sheets | Reusable Waterproof Bed Wetting Sheets For Adults Children & Babies**Pulp**£10.09**34 rev1y ago](https://www.amazon.co.uk/dp/B0FBGNSK38) [**2 x AYDMED Essential Washable Incontinence Bed Pads | For Single Beds | Maximum Absorbency 100% Leakproof Kylie Sheets | Reusable Waterproof Bed Wetting Sheets For Adults Children & Babies**Aydmed**£10.39**98 rev1y ago](https://www.amazon.co.uk/dp/B0FT8NHYSN) [**PVC Sheet Pad Waterproof Stain and Mess Oil-Proof Push Massage Spa Bed Sheet Thickened Protective Cover Bedspread Adult Couple for Upholstery Dressmaking Accessories (Black 130 * 220cm)**Enjiror**£8.37**44 rev1y ago](https://www.amazon.co.uk/dp/B0DJVNZ2F3) [**Aspire Homeware Single Mattress Protector (2 Pack) 100% Waterproof Terry Towel Mattress Cover Dust & Mite Protection Water Proof Sheet**Aspire Homeware**£10.84**310 rev1y ago](https://www.amazon.co.uk/dp/B0DJ9B541R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**2 x PULP Essential Washable Incontinence Bed Pads | For Single Beds | Maximum Absorbency 100% Leakproof Kylie Sheets | Reusable Waterproof Bed Wetting Sheets For Adults Children & Babies**Pulp**£10.09**4.8★**▲ 286%**](https://www.amazon.co.uk/dp/B0FBGNSK38) [**Lynmark Waterproof Bed Protector with Tuck-In Flaps - Washable Bedwetting & Incontinence Sheets Absorb Up to 2L - Leak-Proof OEKO-Tex Certified Cotton Mattress Pad for Single Bed - 90x85cm White**Lynmark**£12.97**4.6★**▲ 134%**](https://www.amazon.co.uk/dp/B0BN85TDND) [**2 x AYDMED Essential Washable Incontinence Bed Pads | For Single Beds | Maximum Absorbency 100% Leakproof Kylie Sheets | Reusable Waterproof Bed Wetting Sheets For Adults Children & Babies**Aydmed**£10.39**4.8★**▲ 93%**](https://www.amazon.co.uk/dp/B0FT8NHYSN) [**ANSIO Tarpaulin 3m x 4m Water-resistant Tarp Large Camping Cover Sheet Multipurpose Groundsheet with UV Protection Weatherproof & Frost-Resistant Reinforced Eyelets - Blue**ANSIO**£6.95**4.5★**▲ 79%**](https://www.amazon.co.uk/dp/B0C3ZQCKKJ) [**2PCS Reusable Underpads 86.4x 91.4cm Cooling Waterproof Bed Pads Washable for Incontinence Adults**peepeego**£9.34**4.6★**▲ 68%**](https://www.amazon.co.uk/dp/B09MRT15GD)
**~~View all trending →~~**
## **What buyers say about waterproof sheet**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**17%
*“Excellent quality and perfectly comfortable to put onto the bed”*
**Size-Overall**13%
*“Fits good”*
**Value For Money**11%
*“reasonably priced”*
**Advertised Vs Actual Product**9%
*“As described”*
**Water Resistance**7%
*“completely waterproof”*
**Washability**5%
*“What I appreciate most is that its fully washable”*
**Comfort-Overall**5%
*“comfortable too”*
**Absorbency**4%
*“They absorb well”*
**Soft Feel**3%
*“soft to the touch”*
**Ease Of Use**2%
*“Easy to use”*
### **What buyers complain about **
**Water Resistance**25%
*“Isnt waterproof”*
**Size-Overall**8%
*“a little larger than most”*
**Thickness**6%
*“they are thick”*
**Quality-Overall**6%
*“Not great quality”*
**Leak-Proof**5%
*“Leak through”*
**Functionality-Overall**4%
*“Sadly dont do its job”*
**Value For Money**4%
*“Perhaps not worth the spend”*
**Noise Level**2%
*“The protector itself is also quite noisy”*
**Advertised Vs Actual Product**2%
*“Misleading”*
**Comfort-Overall**2%
*“So uncomfortable”*
### **Top return reasons **
**Size-Overall**49%
**Quality-Overall**8%
**Material Quality**7%
**Water Resistance**6%
**Advertised Vs Actual Product**4%
**Thin**3%
**Noise Level**3%
**Thickness**2%
**Leak-Proof**1%
**Comfort-Overall**1%
## **Common questions**
- **Is waterproof sheet profitable to sell on Amazon United Kingdom?**
- The niche generates £122K/yr across 40 tracked products. 4 of 5 products launched in the last 360 days are still selling. 90-day search growth is -4.2%. Flapen's verdict: Worth a look (50/100).
- **How competitive is the waterproof sheet niche?**
- 27 brands and 39 sellers compete. The top 5 products take 43% of clicks and top 5 brands hold 56% of demand.
- **What do buyers complain about in waterproof sheet?**
- Top complaints mined from reviews: Water Resistance, Size-Overall, Thickness. The return rate is 0.7%.
- **When does demand for waterproof sheet peak?**
- Demand peaks in Sep; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the waterproof sheet niche?**
- Listings span £3.69–£20.10; the average listing price is £12.33 (sweet spot $15–$100). The average incumbent carries 6,140 reviews — the moat a new listing must climb.
## **Related niches in Baby Products**
- 63 [**baby toys**](https://flapen.com/research/uk/baby-products/baby-toys)£1.5M/yr+4.3%**Launch it**- 63 [**buggy fan**](https://flapen.com/research/uk/baby-products/buggy-fan)£133K/yr>1,000%**Worth a look**- 63 [**car seat travel bag**](https://flapen.com/research/uk/baby-products/car-seat-travel-bag)£184K/yr+80.2%**Worth a look**- 63 [**retractable stair gate**](https://flapen.com/research/uk/baby-products/retractable-stair-gate)£469K/yr+11.0%**Worth a look**- 63 [**christening gifts for girls**](https://flapen.com/research/uk/baby-products/christening-gifts-for-girls)£323K/yr+34.9%**Worth a look**- 64 [**playpen**](https://flapen.com/research/uk/baby-products/playpen)£963K/yr+15.6%**Launch it**[**All Baby Products niches **](https://flapen.com/research/uk/baby-products)