waterproof twin mattress
Worth a lookShows low returns (1.5%), but a deep review moat (10,284 avg reviews) keeps it on the watch list.
Returns
Great1.5%return rate — above 5% kills the launch gate
Brand share
Great58%top-5 brand share — no brand owns this niche
Avg price
Good$126.75avg listing price — sweet spot $15–$100
Competition
Good47%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Market size
Okay$270K$270K/yr · 83K searches
Conversion
Okay2.6%search→purchase rate — share of searches ending in a sale
Growth
Okay+0.9%90-day search growth — must beat 0% to launch
Price range
Okay$9.50–$349.50cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Bad10,284.25avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, waterproof twin mattress is a $270K/yr Amazon United States market (83K searches/yr). The top 5 brands hold 58% of demand. Verdict: Worth a look — 51/100.
Data updated Jul 30, 2026 · scored weekly · How we score niches
waterproof twin mattress market data
- Units sold / yr
- 2K–3K
- avg 0–100/product
- Revenue / yr
- $254K–$317K
- units × avg price
- Conversion rate
- 2.6%
- Avg BSR
- #630
- Page quality
- 0%
- Prime
- 81%
- Sponsored
- 78%
- Out of stock
- 7.9%
- Avg brand age
- 46 months
- Avg seller age
- 174 days
Competition & brand share
The top 5 products take 47% of clicks — established leaders, but buyers still shop beyond them.Brands
27 rising
Sellers
30
Top-5 brand share
58%
Top 20: 96%
Top-5 click share
47%
Top 20: 88%
Open market
35%
- Greaton20%
- FORTNIGHT BEDDING11%
- Qinazoe10%
- Drive Medical9%
- Foam Global8%
- AC Pacific7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.9% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top waterproof twin mattress search terms
- waterproof twin mattress26K/yr
- twin mattress waterproof14K/yr
- vinyl mattress8K/yr
- twin waterproof mattress8K/yr
- plastic mattress5K/yr
- water proof mattress5K/yr
- waterproof mattress twin4K/yr
- rubber mattress4K/yr
- water proof twin mattress3K/yr
- plastic twin mattress3K/yr
Top waterproof twin mattress 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Greaton 7-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$148.453.5★9 rev
Qinazoe Twin Mattress Waterproof 6 Inch Twin Mattress for Kids Made in USA with Diamond-Quilted Breathable Fabric Medium Firm Feel Mattress in a Box Navy Blue (Twin)
Qinazoe$60.574.8★5 rev
Drive Medical 15076 Decompressing Foam Mattress 80 x 36 Inch Blue
Drive Medical$144.954.6★1,729 rev
FORTNIGHT BEDDING 3-Inch Foam Mattress with Water Resistant Vinyl Cover Firm Mattress Sleep Mattress for Kids and Adults Mattress in a Box CertiPUR-US Certified Made in USA (Narrow Twin)
FORTNIGHT BEDDING$132.732.9★42 rev
Foam Global Outdoor Waterproof Mattress 8-Inch Twin Size Easy to Clean Comfortable Foam Mattress Made in USA
Foam Global$194.555.0★26 rev
Newest
by launch date
CHIUSNOOZE Twin 6 Inch Waterproof Memory Foam Mattress for Guest Bedroom
CHIUSNOOZE$79.330 rev
Greaton 9-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$168.141 rev
Qinazoe Twin Mattress Waterproof 6 Inch Twin Mattress for Kids Made in USA with Diamond-Quilted Breathable Fabric Medium Firm Feel Mattress in a Box Navy Blue (Twin)
Qinazoe$60.575 rev
Greaton 7-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$148.459 rev
Greaton 7-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$136.042 rev
Trending
90-day click momentumGreaton 7-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$136.045.0★
CHIUSNOOZE Twin 6 Inch Waterproof Memory Foam Mattress for Guest Bedroom
CHIUSNOOZE$79.330.0★
AC Pacific 6-Inch Water-Resistant High-Density Foam Mattress Made in USA with Stylish Diamond-Quilted Breathable Fabric Distributes Weight Evenly Twin Navy Blue
AC Pacific$102.314.1★
Greaton 9-Inch Medium Firm Water Resistance Nylon Vinyl Foam Mattress Noiseless Soft Cloud Feeling Body Heat Reflection Good for Hospital and Camp Twin Blue
Greaton$168.145.0★
Waterproof Mattress Protector Twin Size Skin Friendly and Breathable Twin Mattress Cover for Kids Viscose Jersey Mattress Pad with 14 Deep Pocket
Moonsea$9.504.5★
What buyers say about waterproof twin mattress
What buyers praise and complain about, mined from review topics.What buyers love
“is super comfortable to me”
“Awesome Fit”
“This is a great quality mattress cover”
“Good value for money”
“Great firmed memory foam”
“soft to the touch”
“It is water proof”
“As advertised”
“it still feels like new”
“Easy peasy”
What buyers complain about
“Not water resistant”
“easily leaked through”
“Not as thick as expected”
“False advertisement”
“Poor Quality Control”
“Not true to size”
“It didn't do much”
“Not worth the price”
“Its uncomfortable as can be :”
“After a month of use”
Top return reasons
Common questions
- Is waterproof twin mattress profitable to sell on Amazon United States?
- The niche generates $270K/yr across 36 tracked products. 5 of 8 products launched in the last 360 days are still selling. 90-day search growth is +0.9%. Flapen's verdict: Worth a look (51/100).
- How competitive is the waterproof twin mattress niche?
- 27 brands and 30 sellers compete. The top 5 products take 47% of clicks and top 5 brands hold 58% of demand.
- What do buyers complain about in waterproof twin mattress?
- Top complaints mined from reviews: Water Resistance, Leak-Proof, Thickness. The return rate is 1.5%.
- When does demand for waterproof twin mattress peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the waterproof twin mattress niche?
- Listings span $9.50–$349.50; the average listing price is $126.75 (sweet spot $15–$100). The average incumbent carries 10,284 reviews — the moat a new listing must climb.