---
title: "Oversized King Flat Sheet — $107K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/oversized-king-flat-sheet"
last_updated: "2026-08-10T16:54:35.615Z"
locale: en
meta:
description: "Niche score 52/100 · $107K/yr market · 95K searches/yr. A deep review moat (29,662 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $107K/yr market · 95K searches/yr. A deep review moat (29,662 avg reviews) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Oversized King Flat Sheet — $107K/yr Amazon US Niche (2026) - Flapen"
---
# **oversized king flat sheet**
**Worth a look**
Shows a sweet-spot price point ($22.21 avg), but a deep review moat (29,662 avg reviews) keeps it on the watch list.
Market size 26Growth 37Conversion 59Competition 79Returns 49Price range 84Avg price 93Brand share 68Review moat 11Quality gap 33
**Avg price**
**Great****$22.21**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$9.11–$51.22**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Great****36%**
top-5 click share — an open shelf
**Brand share**
**Good****64%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Good****5.1%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.0%**
return rate — above 5% kills the launch gate
**Growth**
**Okay****+9.8%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$107K**
$107K/yr · 95K searches
**Review moat**
**Bad****29,662.07**
avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, oversized king flat sheet is a $107K/yr Amazon United States market (95K searches/yr). The top 5 brands hold 64% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 22, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **oversized king flat sheet market data**
- **Units sold / yr**
- **6K–8K**
- avg 100–250/product
- **Revenue / yr**
- **$133K–$178K**
- units × avg price
- **Conversion rate**
- **5.1%**
- **Avg BSR**
- **#28**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **82%**
- **Out of stock**
- **1.4%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **186 days**
## **Competition & brand share**
Clicks spread well past the top 5 (36% combined) — an open shelf where new products get seen.
**Brands**
**18 **▲rising
**Sellers**
**23**
**Top-5 brand share**
**64%**
Top 20: 100%
**Top-5 click share**
**36%**
Top 20: 77%
**Open market**
**29%**
- CGK Unlimited21% - Elegant Comfort15% - Kingnex12% - ROYALE LINENS9% - Utopia Bedding7% - CULVE7%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +9.8% search growth over the last 90 days.
2K2KSpike '24Prime Day '25Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/oversized-king-flat-sheet/trend)
## **Top oversized king flat sheet search terms**
- **oversized king flat sheet**19K/yr-0.3%1.1% conv. - **california king top sheet only**8K/yr-5.4%3.5% conv. - **top sheets king size**4K/yr+40.4%2.2% conv. - **alaskan king flat sheet**5K/yr+14.6%1.4% conv. - **100 percent cotton flat sheets only king size**5K/yr+7.8%2.4% conv. - **king size white flat sheet only**6K/yr+37.7%6.5% conv. - **cal king flat sheet**5K/yr+9.2%1.2% conv. - **white king sheet**5K/yr+13.4%8.8% conv. - **california king top sheet**5K/yr+14.0%2.9% conv. - **oversized king flat sheet only**4K/yr-28.7%1.0% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/oversized-king-flat-sheet/search-terms)
## **Top oversized king flat sheet 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%3%$3K6%$6K9%$10K12%$13K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Cal King Size Flat Sheet - Hotel Quality Top Flat Bed Sheet Only - Ultra-Soft Breathable & Cooling - Fade & Wrinkle Free - Easy-Care Stain & Shrink Resistant Bedding - Easy-Fit & Oeko-Tex - White**CGK Unlimited**$18.72**4.6★15,055 rev](https://www.amazon.com/dp/B07PH11M73) [2**King Flat Sheet Only 1 Pack White Top Bed Sheets Soft Breathable Brushed Microfiber Color-Coded Hem Threads 105x102**CULVE**$11.54**4.5★643 rev](https://www.amazon.com/dp/B0F635WHF5) [3**King Size Flat Sheet - Hotel Quality Top Flat Bed Sheet Only - Ultra-Soft Comfy Breathable & Cooling - Fade & Wrinkle Free - Easy-Care Stain & Shrink Resistant Bedding - Easy-Fit & Oeko-Tex - White**CGK Unlimited**$18.76**4.6★15,055 rev](https://www.amazon.com/dp/B07PH3GD86) [4**Luxury Flat Sheet on Amazon Elegant Comfort Wrinkle-Free 1500 Premier Hotel Quality 1-Piece Flat Sheet King Size White**Elegant Comfort**$9.11**4.6★11,090 rev](https://www.amazon.com/dp/B01M6X1IYZ) [5**Kingnex Oversized King Flat Sheet 132x110 for Extra Wide King or California King Size Bed Durable Soft Double Brushed 1800 Microfiber Top Sheet Only Grey**Kingnex**$24.53**4.7★365 rev](https://www.amazon.com/dp/B0BY8S9ZH5)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**King Flat Sheet Only 1 Pack White Top Bed Sheets Soft Breathable Brushed Microfiber Color-Coded Hem Threads 105x102**CULVE**$11.54**643 rev8mo ago](https://www.amazon.com/dp/B0F635WHF5) [**Royale Linens 100% Organic Cotton King Flat Sheet Only - Super Soft - Percale Top Sheets - King Flat Sheet Sold Separately - Breathable Cool & Crisp White Sheets Only (105 x 102 White)**ROYALE LINENS**$20.59**454 rev1y ago](https://www.amazon.com/dp/B0F5BQ7PTJ) [**ZPECC King Flat Sheet Only 1 Pack Durable White Top Bed Sheets Hypoallergenic Soft Brushed Microfiber Color-Coded Hem Threads 105x102**ZPECC**$11.44**1,357 rev1y ago](https://www.amazon.com/dp/B0F1CR6ZZ2) [**Kingnex Oversized King Flat Sheet 132x110 with Striped Pattern for Extra Wide Tall King or Cal King Bed Durable Soft Brushed 1800 Microfiber Top Sheet Only Grey**Kingnex**$23.09**148 rev2y ago](https://www.amazon.com/dp/B0CP3C5MKZ) [**FreshCulture King Flat Sheets Only 2 Pack - Hotel Quality Flat Bed Sheets - Brushed Microfiber - Ultra Soft & Breathable - Wrinkle-Free - Easy Care - Flat Sheets Only King Size (White)**FreshCulture**$19.51**1,903 rev3y ago](https://www.amazon.com/dp/B0BZ7G4BHR)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Royale Linens California King Flat Sheet - Ultra Soft Brushed 1800 Microfiber Flat Sheets Only - Wrinkle Free & Stain Resistant - Hotel Quality Top Sheet for Bed (King Cal White)**ROYALE LINENS**$13.03**4.5★**▲ 218%**](https://www.amazon.com/dp/B09JC3YS2B) [**Southshore Fine Living Inc. King Flat Sheets Only Oversized Flat Sheet 132 x 110 Hotel Quality Bedding California/King Top Sheet Stays Tucked on Toppers Pillow Tops - Steel Blue Sheets**Southshore Fine Living, Inc.**$27.08**4.7★**▲ 202%**](https://www.amazon.com/dp/B01BBK9756) [**Utopia Bedding Flat Sheet - 1 Pack (Queen White) - Soft Brushed Microfiber Fabric - Shrinkage & Fade Resistant Top Sheet - Easy Care Bed Sheet**Utopia Bedding**$10.20**4.6★**▲ 192%**](https://www.amazon.com/dp/B00XK9CU6K) [**Luxury Flat Sheet on Amazon Elegant Comfort Wrinkle-Free 1500 Premier Hotel Quality 1-Piece Flat Sheet King Size Cream**Elegant Comfort**$10.86**4.6★**▲ 110%**](https://www.amazon.com/dp/B01MCTUU9L) [**King Flat Sheet Only 1 Pack White Top Bed Sheets Soft Breathable Brushed Microfiber Color-Coded Hem Threads 105x102**CULVE**$11.54**4.5★**▲ 110%**](https://www.amazon.com/dp/B0F635WHF5)
**~~View all trending →~~**
## **What buyers say about oversized king flat sheet**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Soft Feel**24%
*“Softest sheets”*
**Value For Money**13%
*“They are affordable”*
**Quality-Overall**11%
*“Good quality, smooth, just what we were looking for”*
**Comfort-Overall**10%
*“Feels comfortable”*
**Size-Overall**9%
*“Fits well”*
**Advertised Vs Actual Product**4%
*“as advertised”*
**Upholstery/Fabric Quality**3%
*“Excellent fabric”*
**Washability**2%
*“wash really well”*
**Sleep Quality**2%
*“Heavenly sleep”*
**Weight Light**1%
*“The sheets are really nice and lightweight”*
### **What buyers complain about **
**Thickness**11%
*“Thin and cheap”*
**Size-Overall**11%
*“It does not fit”*
**Quality-Overall**11%
*“Either bad quality control”*
**Thin**5%
*“Too Thin”*
**Material Quality**5%
*“Cheappp material”*
**Pilling/Linting**4%
*“Pilled”*
**Advertised Vs Actual Product**3%
*“hoping the Twin size is also mismarked”*
**Hard Feel**3%
*“Not soft at all”*
**Durability**3%
*“Falls apart after a few washes”*
**Value For Money**3%
*“But I think I mightve gotten a little too cheap”*
### **Top return reasons **
**Material Quality**24%
**Size-Overall**23%
**Color**10%
**Thin**7%
**Quality-Overall**7%
**Value For Money**6%
**Advertised Vs Actual Product**5%
**Stain Resistance**3%
**Thickness**2%
**Soft Feel**2%
## **Common questions**
- **Is oversized king flat sheet profitable to sell on Amazon United States?**
- The niche generates $107K/yr across 45 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +9.8%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the oversized king flat sheet niche?**
- 18 brands and 23 sellers compete. The top 5 products take 36% of clicks and top 5 brands hold 64% of demand.
- **What do buyers complain about in oversized king flat sheet?**
- Top complaints mined from reviews: Thickness, Size-Overall, Quality-Overall. The return rate is 3.0%.
- **When does demand for oversized king flat sheet peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the oversized king flat sheet niche?**
- Listings span $9.11–$51.22; the average listing price is $22.21 (sweet spot $15–$100). The average incumbent carries 29,662 reviews — the moat a new listing must climb.
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