twin mattress waterproof cover
Worth a lookShows a sweet-spot price point ($20.10 avg), but a deep review moat (69,441 avg reviews) keeps it on the watch list.
Avg price
Great$20.10avg listing price — sweet spot $15–$100
Conversion
Great9.2%search→purchase rate — share of searches ending in a sale
Price range
Great$9.50–$42.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.7%return rate — above 5% kills the launch gate
Competition
Good46%top-5 click share — leaders hold, buyers still browse
Brand share
Okay83%top-5 brand share — brands hold most of the demand
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Market size
Okay$125K$125K/yr · 68K searches
Growth
Okay+0.3%90-day search growth — must beat 0% to launch
Review moat
Bad69,441.36avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, twin mattress waterproof cover is a $125K/yr Amazon United States market (68K searches/yr). The top 5 brands hold 83% of demand. Verdict: Worth a look — 50/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
twin mattress waterproof cover market data
- Units sold / yr
- 8K–10K
- avg 250–500/product
- Revenue / yr
- $161K–$201K
- units × avg price
- Conversion rate
- 9.2%
- Avg BSR
- #16
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 68 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.Brands
10 rising
Sellers
17
Top-5 brand share
83%
Top 20: 100%
Top-5 click share
46%
Top 20: 95%
Open market
11%
- Utopia Bedding54%
- BEDLORE9%
- Moonsea7%
- Amazon Basics7%
- GRT6%
- UNILIBRA6%
- Open — no brand owns it (4 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +0.3% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top twin mattress waterproof cover search terms
- twin mattress waterproof protector28K/yr
- utopia mattress protector17K/yr
- twin mattress waterproof cover12K/yr
- utopia bedding waterproof mattress protector11K/yr
Top twin mattress waterproof cover 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
Twin Size Mattress Protector Waterproof Premium 200 GSM Terry Mattress Cover Soft & Breathable Bed Cover Fitted Sheet Style Stretchable Deep Pockets 15 by Utopia Bedding (White)
Utopia Bedding$11.964.5★104,639 rev
BEDLORE Waterproof Mattress Protector Twin Size Mattress Pad with Deep Pocket 6-15 Depth Soft Breathable Dirt-Proof Single Bed Mattress Cover for Bedroom Dorm Room (Gray)
BEDLORE$19.214.6★23,362 rev
Utopia Bedding Mattress Protector Zippered Twin Size 100% Waterproof Bed Bug and Dust Mite Proof Mattress Encasement Absorbent 6 Sided Mattress Cover
Utopia Bedding$18.434.6★132,636 rev
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★4,111 rev
Amazon Basics Waterproof Mattress Protector Fitted Silent Protection Twin White
Amazon Basics$9.894.5★1,147 rev
Newest
by launch dateAmazon Basics Waterproof Mattress Protector Fitted Silent Protection Twin White
Amazon Basics$9.891,147 rev
Utopia Bedding Waterproof Mattress Protector Queen Size (Gray) Premium 3D Air Soft Fabric Mattress Cover Fits 17 Inches Deep Breathable Fitted Style with Stretchable Pockets
Utopia Bedding$18.531,903 rev
Utopia Bedding Waterproof Mattress Protector Twin Size (Gray) Premium 3D Air Soft Fabric Mattress Cover Fits 15 Inches Deep Breathable Fitted Style with Stretchable Pockets
Utopia Bedding$14.721,903 rev
Utopia Bedding Mattress Protector Zippered Super Queen Size 100% Waterproof Bed Bug and Dust Mite Proof Mattress Encasement Absorbent 6 Sided Mattress Cover
Utopia Bedding$23.42132,636 rev
Utopia Bedding Waterproof Mattress Protector Queen Mattress Pad Noiseless Quilted Fitted Cover with Deep Pocket Stretches up to 16 Inches (White)
Utopia Bedding$18.835,146 rev
Trending
90-day click momentum
Utopia Bedding Mattress Protector Zippered King Size (Pack of 2) 100% Waterproof Bed Bug and Dust Mite Proof Mattress Encasement Absorbent 6 Sided Mattress Cover
Utopia Bedding$42.574.6★
BEDLORE Waterproof Mattress Protector Twin Size Mattress Pad with Deep Pocket 6-15 Depth Soft Breathable Single Bed Mattress Cover for Bedroom Dorm Room (White)
BEDLORE$19.554.6★
Utopia Bedding Waterproof Mattress Protector Queen Size (Gray) Premium 3D Air Soft Fabric Mattress Cover Fits 17 Inches Deep Breathable Fitted Style with Stretchable Pockets
Utopia Bedding$18.534.6★
Twin Mattress Protector Waterproof Soft & Breathable Terry Noiseless Twin Mattress Cover Fitted Sheets up -14 Mattress Protector for Kids Bed Cover Mattress Pad Protecor Machine Wash
SPRINGSPIRIT$9.794.5★
Amazon Basics Waterproof Mattress Protector Fitted Silent Protection Twin White
Amazon Basics$9.894.5★
What buyers say about twin mattress waterproof cover
What buyers praise and complain about, mined from review topics.What buyers love
“Fits mattress good”
“Decent quality”
“They were inexpensive”
“Definitely water resistant”
“Better than expected”
“Very comfortable”
“Soft to the touch”
“easy to wash”
“Easy to use”
“This is a good mattress pad as long as youre not looking to add much additional cushion to your bed”
What buyers complain about
“Not water proof”
“leaked right through”
“I wish it was more thicker”
“Poor Quality Control”
“Runs small”
“Did not work”
“degraded quickly after several washes”
“Material pills up”
“Does not hold in much moisture”
“Not worth the price”
Top return reasons
Common questions
- Is twin mattress waterproof cover profitable to sell on Amazon United States?
- The niche generates $125K/yr across 25 tracked products. 90-day search growth is +0.3%. Flapen's verdict: Worth a look (50/100).
- How competitive is the twin mattress waterproof cover niche?
- 10 brands and 17 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 83% of demand.
- What do buyers complain about in twin mattress waterproof cover?
- Top complaints mined from reviews: Water Resistance, Leak-Proof, Thickness. The return rate is 1.7%.
- When does demand for twin mattress waterproof cover peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the twin mattress waterproof cover niche?
- Listings span $9.50–$42.57; the average listing price is $20.10 (sweet spot $15–$100). The average incumbent carries 69,441 reviews — the moat a new listing must climb.