---
title: "King Size Plastic Mattress Protector — $93K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/king-size-plastic-mattress-protector"
last_updated: "2026-08-06T14:48:04.017Z"
locale: en
meta:
description: "Niche score 47/100 · $93K/yr market · 53K searches/yr · $17.91 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 47/100 · $93K/yr market · 53K searches/yr · $17.91 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "King Size Plastic Mattress Protector — $93K/yr Amazon US Niche (2026) - Flapen"
---
# **king size plastic mattress protector**
**Skip it**
A deep review moat (27,893 avg reviews) — this niche doesn't clear our bar today.
Market size 23Growth 31Conversion 86Competition 20Returns 75Price range 63Avg price 82Brand share 48Review moat 12Quality gap 67
**Conversion**
**Great****9.9%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$17.91**
avg listing price — sweet spot $15–$100
**Returns**
**Great****2.0%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$7.65–$27.46**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+4.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$93K**
$93K/yr · 53K searches
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
**Review moat**
**Bad****27,892.55**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, king size plastic mattress protector is a $93K/yr Amazon United States market (53K searches/yr). The top 5 brands hold 76% of demand. Verdict: Skip it — 47/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **king size plastic mattress protector market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **$90K–$107K**
- units × avg price
- **Conversion rate**
- **9.9%**
- **Avg BSR**
- **#34**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **91%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **65 months**
- **Avg seller age**
- **191 days**
## **Competition & brand share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**13**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**18%**
- Axgatoxe30% - BLISSFORD16% - Amazon Basics13% - FRESH IDEAS8% - SOFINNI8% - Ruili6% - Open — no brand owns it (5 brands, 18%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +4.8% search growth over the last 90 days.
1K600Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/king-size-plastic-mattress-protector/trend)
## **Top king size plastic mattress protector search terms**
- **king size plastic mattress protector**13K/yr+10.5%7.8% conv. - **plastic bed cover king**9K/yr+8.7%5.1% conv. - **plastic king size mattress protector**5K/yr+6.9%9.0% conv. - **king size plastic mattress cover**7K/yr-25.7%8.7% conv. - **plastic mattress protector king**5K/yr+16.0%8.2% conv. - **plastic mattress cover king size bed**5K/yr+5.6%8.2% conv. - **king plastic mattress cover**4K/yr+0.2%11.8% conv. - **king size mattress plastic cover**3K/yr+8.1%10.4% conv. - **king mattress plastic cover**3K/yr+34.8%10.4% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/king-size-plastic-mattress-protector/search-terms)
## **Top king size plastic mattress protector 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%$9K20%$19K30%$28K40%$37K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Plastic Mattress Bag for Moving Storage King Size (1.5MIL)**Axgatoxe**$8.28**4.3★1,532 rev](https://www.amazon.com/dp/B0F2JDTBHW) [2**BLISSFORD Plastic Mattress Protector - Heavy Duty Fitted Vinyl - Plastic Mattress Cover King Size Bed Rubber Sheets for Bedwetting Adult or Child 100% Waterproof Sheets King Size**BLISSFORD**$23.70**4.4★4,599 rev](https://www.amazon.com/dp/B0033RBSNK) [3**Amazon Basics Waterproof Mattress Protector Bed Bug and Dust Mite Barrier King White**Amazon Basics**$15.33**4.5★1,147 rev](https://www.amazon.com/dp/B0DQKXRNLR) [4**Fresh Ideas Fitted Vinyl Mattress Protector Waterproof Hypoallergenic 14 Pockets King**FRESH IDEAS**$12.71**4.1★2,421 rev](https://www.amazon.com/dp/B003E3XGFQ) [5**Waterproof Zippered Plastic Mattress Protector Encasement (King Size)**SOFINNI**$18.91**3.4★4,212 rev](https://www.amazon.com/dp/B09BZYJN92)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Amazon Basics Waterproof Mattress Protector Bed Bug and Dust Mite Barrier King White**Amazon Basics**$15.33**1,147 rev1y ago](https://www.amazon.com/dp/B0DQKXRNLR) [**Plastic Mattress Bag for Moving Storage King Size (1.5MIL)**Axgatoxe**$8.28**1,532 rev1y ago](https://www.amazon.com/dp/B0F2JDTBHW) [**Plastic Mattress Bag for Moving Storage Mattress Protector Cover Mattress Bag for Disposal (King)**SANEMBER**$7.65**513 rev1y ago](https://www.amazon.com/dp/B0DYNL7KHZ) [**Waterproof Mattress Protector King Size Mattress Cover Protector Smooth Top Mattress Protector for Kids Breathable Skin Friendly and Noiseless Fitted Sheet King Size Polyester**Moonsea**$13.96**7,849 rev2y ago](https://www.amazon.com/dp/B0CHQS44QQ) [**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**23,362 rev3y ago](https://www.amazon.com/dp/B0C1NQZDYH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**King Size Mattress Protector Waterproof- Washable Mattress Cover Fitted Bed Pad Noiseless Plastic Protection Up to 18 Mattress Protector Soft&BreathableWhite**Ruili**$24.68**4.6★**▲ 108%**](https://www.amazon.com/dp/B07GB4QQWW) [**Amazon Basics Waterproof Mattress Protector Bed Bug and Dust Mite Barrier King White**Amazon Basics**$15.33**4.5★**▲ 102%**](https://www.amazon.com/dp/B0DQKXRNLR) [**Plastic Mattress Bag for Moving Storage Mattress Protector Cover Mattress Bag for Disposal (King)**SANEMBER**$7.65**4.4★**▲ 70%**](https://www.amazon.com/dp/B0DYNL7KHZ) [**Fresh Ideas Fitted Vinyl Mattress Protector Waterproof Hypoallergenic 14 Pockets King**FRESH IDEAS**$12.71**4.1★**▲ 29%**](https://www.amazon.com/dp/B003E3XGFQ) [**BLISSFORD Plastic Mattress Protector - Heavy Duty Fitted Vinyl - Plastic Mattress Cover King Size Bed Rubber Sheets for Bedwetting Adult or Child 100% Waterproof Sheets King Size**BLISSFORD**$23.70**4.4★**▲ 10%**](https://www.amazon.com/dp/B0033RBSNK)
**~~View all trending →~~**
## **What buyers say about king size plastic mattress protector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**17%
*“Easy fit”*
**Quality-Overall**11%
*“A+ Quality”*
**Value For Money**9%
*“Great value”*
**Water Resistance**7%
*“Water proof”*
**Comfort-Overall**5%
*“Very comfortable”*
**Soft Feel**4%
*“So Soft”*
**Thickness**4%
*“Super thick”*
**Ease Of Use**3%
*“Easy to use”*
**Advertised Vs Actual Product**3%
*“As advertised”*
**Washability**2%
*“Easy to wash”*
### **What buyers complain about **
**Water Resistance**23%
*“Not a water proof mattress”*
**Quality-Overall**7%
*“what I did receive seems low quality”*
**Durability**6%
*“maybe not as durable as the more expensive ones”*
**Size-Overall**5%
*“too big”*
**Thickness**5%
*“Its less thick than my ziplock sandwich bags”*
**Leak-Proof**5%
*“Leaked through”*
**Noise Level**3%
*“Makes noise”*
**Value For Money**3%
*“And it would cost you less”*
**Advertised Vs Actual Product**3%
*“Not as described”*
**Functionality-Overall**2%
*“Did not work”*
### **Top return reasons **
**Size-Overall**34%
**Material Quality**10%
**Advertised Vs Actual Product**8%
**Value For Money**7%
**Noise Level**5%
**Thin**4%
**Quality-Overall**3%
**Comfort-Overall**3%
**Water Resistance**2%
**Color**2%
## **Common questions**
- **Is king size plastic mattress protector profitable to sell on Amazon United States?**
- The niche generates $93K/yr across 11 tracked products. 90-day search growth is +4.8%. Flapen's verdict: Skip it (47/100).
- **How competitive is the king size plastic mattress protector niche?**
- 11 brands and 13 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in king size plastic mattress protector?**
- Top complaints mined from reviews: Water Resistance, Quality-Overall, Durability. The return rate is 2.0%.
- **When does demand for king size plastic mattress protector peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the king size plastic mattress protector niche?**
- Listings span $7.65–$27.46; the average listing price is $17.91 (sweet spot $15–$100). The average incumbent carries 27,893 reviews — the moat a new listing must climb.
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