--- title: "Is King Mattress Protector Worth Selling on Amazon US?" canonical_url: "https://flapen.com/research/us/home-kitchen/king-mattress-protector" last_updated: "2026-09-18T19:52:25.703Z" locale: en meta: description: "King Mattress Protector Amazon US estimated sales data: $982,000/month, +3.0% growth. Worth selling? See the verdict." "og:description": "King Mattress Protector Amazon US estimated sales data: $982,000/month, +3.0% growth. Worth selling? See the verdict." "og:title": "Is King Mattress Protector Worth Selling on Amazon US?" --- OverviewNichesProductsSearch terms Flapen Score ## King Mattress Protector against its category The dotted line is the Home & Kitchen average. Past it, King Mattress Protector is stronger. Inside it, weaker.Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality GapThis niche Category average [**See the method **](https://flapen.com/science) Market ## The King Mattress Protector market on Amazon at a glance Shoppers on Amazon United States searched for King Mattress Protector 4.0M times last year and spent an estimated $11.8M. The top 5 brands take 83% of clicks. Flapen scores it 57 out of 100, a Maybe. 01 · Demand ### An estimated 10.9% of those searches ended in a purchase. Shoppers searched for this 4.0M times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 10.9% of those searches ended in a purchase. Searches in the last 90 days moved +3.0% against the 90 days before. Searches, conversion and average price together put the market at an estimated $11.8M a year.
Searches, last 12 months
4.0M
Growth, 90 days vs prior 90
+3.0%
Conversion, latest week
10.9%
Market size, estimated
$11.8Ma year
Peak month
July1.2× the quietest month
Top search term
king size mattress protector1.1M searches a year
02 · Price ### A sale here is worth $26.96. Listings sell for $26.96 on average, from $13.96 to $54.39. Amazon reports units sold in ranges. This niche sold 400K to 500K a year. The average listing sells 20,000 to 25,000 of them. At $26.96 that is $539K to $674K a year per listing.
Average price
$26.96inside the $15 to $100 sweet spot
Price range
$13.96–$54.39
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
400K–500K
Units per listing a year
20,000–25,000
Revenue per listing a year
$539K–$674K
Returns
2.0%of orders · Amazon United States median 2.1%
03 · Entry bar ### The bar here is ads and reviews. 100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #17 within Mattress Protectors & Encasements. It carries 65,161 reviews at 4.57 stars, so a new listing needs social proof before a better product.
Sponsored listings
100%
Prime listings
100%
Out of stock, average day
0.0%
Average rank
#17in Mattress Protectors & Encasements
Average rating
4.57 starsAmazon United States average 4.42 stars
Average reviews
65,161per listing
Listings tracked
20
04 · Newcomers ### Brands here are settling in. The brands on the shelf have sold for 51 months on average, so the names here are settling in.
Launched, last 12 months
0
Successful launches
0Amazon's first-year sales bar
Average brand age
51 months
Products ## Top King Mattress Protector products & what they sell for Every tracked product: its share of the shelf, its reviews, and its price.**Sign in to see the products** The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone. [Sign in](https://flapen.com/auth/login) Competition ## Competition: brands, sellers & click share The top 5 products take 62% of clicks. Leaders hold, but buyers still shop past them. Brands**12 **▲rising Sellers**19** Top-5 brand share**83%** Top 20: 100% Top-5 click share**62%** Top 20: 100% Open market**12%**- Brand 127% - Brand 226% - Brand 319% - Brand 47% - Brand 55% - Brand 65% - Open — no brand owns it (6 brands, 12%) Demand ## King Mattress Protector search demand Weekly searches over the year, seasonality beneath. Pick a range.3M6M1YAll100K60KHoliday '24Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay No pronounced peak months · busiest ÷ quietest = 1.2× Search terms ## Top King Mattress Protector search terms shoppers use The exact words shoppers type, with yearly volume, growth, and conversion.90D1Y - **king size mattress protector**1.1M/yr+4.0%9.4% conv. - **king mattress protector**901K/yr+10.0%11.5% conv. - **mattress protector king**599K/yr-9.8%8.5% conv. - **waterproof mattress protector king**190K/yr-4.7%9.0% conv. - **king size mattress cover**165K/yr+10.4%7.2% conv. - **king mattress cover**168K/yr+7.8%8.4% conv. - **mattress cover king size bed**163K/yr-3.9%6.5% conv. - **king size waterproof mattress protector**122K/yr-3.3%11.1% conv. - **king waterproof mattress protector**66K/yr+38.7%10.9% conv. - **mattress protector king size bed**70K/yr+39.3%9.3% conv. Reviews and returns ## What reviews say buyers love and hate about King Mattress Protector We read the reviews and the return reasons for every product selling here.**17%**of positive reviews mention “Size-Overall”**25%**of negative reviews mention “Water Resistance”**2.0%**of orders come back > **“NOT WATER PROOF” **_A buyer, on “Water Resistance”25% of negative reviews mention the same topic_ Every topic ### Every topic buyers talk about, one row each. Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote. 17 topics**Negative****Positive****Water Resistance**−0.1625%6%4% of returns“NOT WATER PROOF”**Size-Overall**+0.946%17%26% of returns“fit snug”**Quality-Overall**+0.925%16%4% of returns“A+ Quality”**Comfort-Overall**+0.779%“Its comfortable and it breathes well”**Value For Money**+0.372%6%6% of returns“fair price”**Soft Feel**—7%“And great soft material”**Advertised Vs Actual Product**—3%4%8% of returns“As described”**Thickness**−0.014%2%3% of returns“not thick enough”**Leak-Proof**—6%“Leaked”**Durability**—3%“Falls apart in wash”**Foam**+0.263%“Great for foam mattress”**Noise Level**—3%5% of returns“Makes noise”**Functionality-Overall**−0.023%“it is not effective”**Washability**+0.092%“easily to wash”**Material Quality**—13% of returnsReturn reason only. No review mentions it.**Thin**—4% of returnsReturn reason only. No review mentions it.**Cushion**—4% of returnsReturn reason only. No review mentions it.Expand all rows Keep looking ## Related niches Niches in the same category that score near this one. Research these next. [All Home & Kitchen niches](https://flapen.com/research/us/home-kitchen/niches) [

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