---
title: "Waterproof Sheets King Size — $74K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/waterproof-sheets-king-size"
last_updated: "2026-08-07T23:27:58.901Z"
locale: en
meta:
description: "Niche score 42/100 · $74K/yr market · 67K searches/yr · $25.64 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $74K/yr market · 67K searches/yr · $25.64 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Waterproof Sheets King Size — $74K/yr Amazon US Niche (2026) - Flapen"
---
# **waterproof sheets king size**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 18Growth 62Conversion 52Competition 16Returns 89Price range 95Avg price 95Brand share 0Review moat 15Quality gap 30
**Avg price**
**Incredible****$25.64**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$19.21–$43.42**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Great****1.3%**
return rate — above 5% kills the launch gate
**Growth**
**Good****+39.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Good****4.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Bad****$74K**
$74K/yr · 67K searches
**Competition**
**Bad****81%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****22,033.33**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, waterproof sheets king size is a $74K/yr Amazon United States market (67K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Skip it — 42/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **waterproof sheets king size market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$77K–$103K**
- units × avg price
- **Conversion rate**
- **4.3%**
- **Avg BSR**
- **#13**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **92%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **56 months**
- **Avg seller age**
- **189 days**
## **Competition & brand share**
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**7**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**81%**
Top 20: 100%
**Open market**
**0%**
- BEDLORE91% - ohano4% - WenBags3% - Utopia Bedding2%
## **Demand & seasonality**
Weekly Amazon search volume, last 55 weeks — +39.6% search growth over the last 90 days.
2K2KSpike '26 seasonJulAugSepOctNovDecJanFebMarAprMayJunJul
Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 3.0×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/waterproof-sheets-king-size/trend)
## **Top waterproof sheets king size search terms**
- **bedlore waterproof mattress protector**25K/yr+87.5%4.7% conv. - **waterproof sheets king size**21K/yr+2.6%1.7% conv. - **water proof sheets king size**7K/yr+5.1%2.7% conv. - **bedlore mattress protector**5K/yr+17.5%3.4% conv. - **king size waterproof sheet**5K/yr-0.2%3.5% conv. - **waterproof fitted sheet king**4K/yr+12.0%2.5% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/waterproof-sheets-king-size/search-terms)
## **Top waterproof sheets king size 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%$7K20%$15K30%$22K40%$30K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**BEDLORE Waterproof Mattress Protector King Size Mattress Pad with Deep Pocket 6-18 Depth Soft Noiseless Dirt-Proof Bed Mattress Cover Washable for Home Bedroom Hotel (Gray)**BEDLORE**$27.46**4.6★23,362 rev](https://www.amazon.com/dp/B0C1NQZDYH) [2**BEDLORE Waterproof Mattress Protector Queen Size Mattress Pad Noiseless with Deep Pocket 6-18 Depth Soft Breathable Dirt-Proof Bed Mattress Cover Washable for Home Bedroom Hotel (Gray)**BEDLORE**$25.00**4.6★23,362 rev](https://www.amazon.com/dp/B0C1NNYJGB) [3**BEDLORE Waterproof Mattress Protector Queen Size Noiseless Mattress Pad with Deep Pocket 6-18 Depth Soft Breathable Bed Mattress Cover Washable for Home Bedroom Hotel (White)**BEDLORE**$25.56**4.6★23,362 rev](https://www.amazon.com/dp/B0C1NM42PN) [4**BEDLORE Queen Mattress Topper Viscose Derived from Bamboo Thick Pillow Top Mattress Pad with Stretchable Pockets for 6-18 inches Mattress Soft Mattress Topper for Back Pain Relief(Dark Gray)**BEDLORE**$43.42**4.4★12,633 rev](https://www.amazon.com/dp/B0D3D5LKG9) [5**BEDLORE Waterproof Mattress Protector Noiseless Full Size Mattress Pad with Deep Pocket Fitted Up to 6-15 Soft Dirt-Proof Double Mattress Cover for College Dorm(Gray)**BEDLORE**$22.66**4.7★9,429 rev](https://www.amazon.com/dp/B0C9MGB9QG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**WenBags Lightweight Waterproof Flat Sheet 90 * 98 Inches King Size - Mattress Protector for Bed & Couch Pet Hair Resistant Cover Ideal for Dogs & Cats Perfect for Hotels & Hospitals (Navy Blue)**WenBags**$23.08**399 rev1y ago](https://www.amazon.com/dp/B0DFVKB41F) [**BEDLORE Queen Mattress Topper Viscose Derived from Bamboo Thick Pillow Top Mattress Pad with Stretchable Pockets for 6-18 inches Mattress Soft Mattress Topper for Back Pain Relief(Dark Gray)**BEDLORE**$43.42**12,633 rev1y ago](https://www.amazon.com/dp/B0D3D5LKG9) [**BEDLORE Waterproof Mattress Protector Noiseless Full Size Mattress Pad with Deep Pocket Fitted Up to 6-15 Soft Dirt-Proof Double Mattress Cover for College Dorm(Gray)**BEDLORE**$22.66**9,429 rev3y ago](https://www.amazon.com/dp/B0C9MGB9QG) [**BEDLORE Waterproof Mattress Protector Noiseless Queen Size Mattress Pad with Deep Pocket Fitted Up to 6-18 Soft Breathable Dirt-Proof Bed Mattress Cover Washable Bedroom Hotel (Gray)**BEDLORE**$25.00**9,429 rev3y ago](https://www.amazon.com/dp/B0C9MK32CZ) [**BEDLORE Waterproof Mattress Protector Noiseless King Size Mattress Pad with Deep Pocket Fitted Up to 6-18 inches Soft Breathable Dirt-Proof Bed Mattress Cover Washable for Bedroom Hotel (Gray)**BEDLORE**$27.34**9,429 rev3y ago](https://www.amazon.com/dp/B0C9MGYFHD)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**BEDLORE Waterproof Mattress Protector Queen Size Noiseless Mattress Pad with Deep Pocket 6-18 Depth Soft Breathable Bed Mattress Cover Washable for Home Bedroom Hotel (White)**BEDLORE**$25.56**4.6★**▲ 57%**](https://www.amazon.com/dp/B0C1NM42PN) [**BEDLORE Queen Mattress Topper Viscose Derived from Bamboo Thick Pillow Top Mattress Pad with Stretchable Pockets for 6-18 inches Mattress Soft Mattress Topper for Back Pain Relief(Dark Gray)**BEDLORE**$43.42**4.4★**▲ 43%**](https://www.amazon.com/dp/B0D3D5LKG9) [**BEDLORE Waterproof Mattress Protector Queen Size Mattress Pad Noiseless with Deep Pocket 6-18 Depth Soft Breathable Dirt-Proof Bed Mattress Cover Washable for Home Bedroom Hotel (Gray)**BEDLORE**$25.00**4.6★**▲ 18%**](https://www.amazon.com/dp/B0C1NNYJGB) [**BEDLORE Waterproof Mattress Protector Noiseless Full Size Mattress Pad with Deep Pocket Fitted Up to 6-15 Soft Dirt-Proof Double Mattress Cover for College Dorm(Gray)**BEDLORE**$22.66**4.7★**▲ 17%**](https://www.amazon.com/dp/B0C9MGB9QG) [**BEDLORE Waterproof Mattress Protector Noiseless Queen Size Mattress Pad with Deep Pocket Fitted Up to 6-18 Soft Breathable Dirt-Proof Bed Mattress Cover Washable Bedroom Hotel (Gray)**BEDLORE**$25.00**4.7★**— 4%**](https://www.amazon.com/dp/B0C9MK32CZ)
**~~View all trending →~~**
## **What buyers say about waterproof sheets king size**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**14%
*“comfortable to”*
**Quality-Overall**13%
*“High quality bed cover that is of the best quality”*
**Size-Overall**13%
*“Fits mattress well”*
**Soft Feel**7%
*“Comfortable and soft”*
**Value For Money**7%
*“Money well spent”*
**Water Resistance**5%
*“Truly water proof”*
**Foam**4%
*“I have a firm mattress that I love”*
**Sleep Quality**4%
*“The sleep quality is amazing”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Thickness**2%
*“Fairly thick material with a soft plastic backing”*
### **What buyers complain about **
**Water Resistance**23%
*“Not even water resistant”*
**Leak-Proof**7%
*“Water leak”*
**Thickness**6%
*“Not very Thick”*
**Advertised Vs Actual Product**5%
*“False advertisement”*
**Quality-Overall**4%
*“Bad quality”*
**Comfort-Overall**4%
*“Its uncomfortable as can be :”*
**Size-Overall**4%
*“Runs small”*
**Value For Money**3%
*“Not worth the price”*
**Moist/Dry**3%
*“it will not dry fully”*
**Functionality-Overall**2%
*“it is not effective”*
### **Top return reasons **
**Size-Overall**40%
**Advertised Vs Actual Product**7%
**Material Quality**6%
**Value For Money**5%
**Comfort-Overall**4%
**Color**4%
**Thickness**4%
**Noise Level**3%
**Cushion**3%
**Water Resistance**3%
## **Common questions**
- **Is waterproof sheets king size profitable to sell on Amazon United States?**
- The niche generates $74K/yr across 12 tracked products. 90-day search growth is +39.6%. Flapen's verdict: Skip it (42/100).
- **How competitive is the waterproof sheets king size niche?**
- 4 brands and 7 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in waterproof sheets king size?**
- Top complaints mined from reviews: Water Resistance, Leak-Proof, Thickness. The return rate is 1.3%.
- **When does demand for waterproof sheets king size peak?**
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 3.0× the quietest.
- **What does it cost to enter the waterproof sheets king size niche?**
- Listings span $19.21–$43.42; the average listing price is $25.64 (sweet spot $15–$100). The average incumbent carries 22,033 reviews — the moat a new listing must climb.
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