waterproof sheets king size
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$25.64avg listing price — sweet spot $15–$100
Price range
Incredible$19.21–$43.42cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.3%return rate — above 5% kills the launch gate
Growth
Good+39.6%90-day search growth — must beat 0% to launch
Conversion
Good4.3%search→purchase rate — share of searches ending in a sale
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$74K$74K/yr · 67K searches
Competition
Bad81%top-5 click share — a locked-up shelf
Review moat
Bad22,033.33avg incumbent reviews — the moat a new listing must climb
Brand share
Bad100%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
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.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 3.0×
Top waterproof sheets king size search terms
- bedlore waterproof mattress protector25K/yr
- waterproof sheets king size21K/yr
- water proof sheets king size7K/yr
- bedlore mattress protector5K/yr
- king size waterproof sheet5K/yr
- waterproof fitted sheet king4K/yr
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.
All 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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$27.464.6★23,362 rev
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$25.004.6★23,362 rev
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$25.564.6★23,362 rev
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$43.424.4★12,633 rev
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$22.664.7★9,429 rev
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$23.08399 rev
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$43.4212,633 rev
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$22.669,429 rev
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$25.009,429 rev
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$27.349,429 rev
Trending
90-day click momentumBEDLORE 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$25.564.6★
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$43.424.4★
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$25.004.6★
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$22.664.7★
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$25.004.7★
What buyers say about waterproof sheets king size
What buyers praise and complain about, mined from review topics.What buyers love
“comfortable to”
“High quality bed cover that is of the best quality”
“Fits mattress well”
“Comfortable and soft”
“Money well spent”
“Truly water proof”
“I have a firm mattress that I love”
“The sleep quality is amazing”
“As advertised”
“Fairly thick material with a soft plastic backing”
What buyers complain about
“Not even water resistant”
“Water leak”
“Not very Thick”
“False advertisement”
“Bad quality”
“Its uncomfortable as can be :”
“Runs small”
“Not worth the price”
“it will not dry fully”
“it is not effective”
Top return reasons
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.