---
title: "Down Comforter King Size — $4.0M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/home-kitchen/down-comforter-king-size"
last_updated: "2026-08-10T12:02:16.731Z"
locale: en
meta:
description: "Niche score 56/100 · $4.0M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 56/100 · $4.0M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Down Comforter King Size — $4.0M/yr Amazon US Niche (2026) - Flapen"
---
# **down comforter king size**
**Worth a look**
Shows a $4.0M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 97Growth 16Conversion 34Competition 83Returns 46Price range 46Avg price 88Brand share 71Review moat 18Quality gap 43
**Market size**
**Incredible****$4.0M**
$4.0M/yr · 2.2M searches
**Avg price**
**Great****$65.23**
avg listing price — sweet spot $15–$100
**Competition**
**Great****32%**
top-5 click share — an open shelf
**Brand share**
**Good****62%**
top-5 brand share — brands hold most of the demand
**Returns**
**Okay****3.3%**
return rate — above 5% kills the launch gate
**Price range**
**Okay****$20.16–$192.88**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Conversion**
**Okay****2.8%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Bad****16,018.53**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-17.6%**
90-day search growth — must beat 0% to launch
**Signals**[** High Price**](https://flapen.com/research/niches?market=us&signal=high_price "Avg price > $50")
According to Flapen's Amazon United States niche tracking, down comforter king size is a $4.0M/yr Amazon United States market (2.2M searches/yr). The top 5 brands hold 62% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Worth a look — 56/100.
Data updated Jul 18, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **down comforter king size market data**
- **Units sold / yr**
- **60K–80K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **$3.9M–$5.2M**
- units × avg price
- **Conversion rate**
- **2.8%**
- **Avg BSR**
- **#49**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **96%**
- **Out of stock**
- **1.5%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.
**Brands**
**32 **▲rising
**Sellers**
**44**
**Top-5 brand share**
**62%**
Top 20: 91%
**Top-5 click share**
**32%**
Top 20: 68%
**Open market**
**34%**
- Bedsure28% - Utopia Bedding17% - L LOVSOUL8% - EGYPTIAN BEDDING5% - CozyLux4% - Amazon Basics4%
## **Demand & seasonality**
Weekly Amazon search volume, last 100 weeks — -17.6% search growth over the last 90 days.
120K80KSpike '24Holiday '24Prime Day '25Spike '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jan, Nov, Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/home-kitchen/down-comforter-king-size/trend)
## **Top down comforter king size search terms**
- **down comforter king size**667K/yr-31.1%1.5% conv. - **king duvet**230K/yr-6.0%2.8% conv. - **white comforter king**206K/yr-12.2%1.6% conv. - **king size duvet**147K/yr-15.0%2.2% conv. - **king down comforter**155K/yr-23.5%2.7% conv. - **duvet king**119K/yr-11.3%2.0% conv. - **white king comforter**103K/yr-7.8%2.3% conv. - **white king comforter set**90K/yr+8.1%1.2% conv. - **king size down comforter**109K/yr-22.3%1.9% conv. - **duvet king size**71K/yr-17.7%1.6% conv. [**All search terms **](https://flapen.com/research/us/home-kitchen/down-comforter-king-size/search-terms)
## **Top down comforter king size 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%$119K6%$237K9%$356K12%$475K101001K10K100K1.0M 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**Utopia Bedding King Comforter Duvet Insert Quilted White Comforter with Corner Tabs Box Stitched Down Alternative Comforters King Size 90 x 102 inches**Utopia Bedding**$36.37**4.6★155,570 rev](https://www.amazon.com/dp/B01DE29JW0) [2**Bedsure Comforter Duvet Insert - Quilted Comforters King Size All Season Duvet GentleSoft Down Alternative Bedding Blanket with 8 Tabs Gifts for Women/Men White King 90 x 102 Inches**Bedsure**$47.99**4.7★76,669 rev](https://www.amazon.com/dp/B07YKLXB3Y) [3**Bedsure King Comforter Set White Soft Prewashed Bedding for All Seasons 3 Pieces GentleSoft Bed Set 1 Lightweight Comforter (104x90) and 2 Pillowcases (20x36)**Bedsure**$36.40**4.4★9,430 rev](https://www.amazon.com/dp/B0CGLPZ2N4) [4**Utopia Bedding White Comforter King Size Duvet Insert Down Alternative Comforter**Utopia Bedding**$30.52**4.6★126,601 rev](https://www.amazon.com/dp/B01JPECPZE) [5**Luxurious King/California King Size Goose Down Fiber Waterfowl Feather Fiber Comforter Duvet 100% Cotton Cover 58 oz. Fill Weight Baffle Box Design White Solid**EGYPTIAN BEDDING**$154.12**4.4★9,674 rev](https://www.amazon.com/dp/B01GUZ08MI)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Martha Stewart Luxury White Goose Feathers Down Fiber Duvet Insert King Size - Hotel Collection 100% Cotton Cover Comforter All Season Medium Warmth Breathable Hypoallergenic 106 x 90 Inch**Martha Stewart**$78.28**47 rev5mo ago](https://www.amazon.com/dp/B0GK8MQZ9Z) [**Bedsure King Size Comforter Set White Soft Prewashed King Bedding Quilted Comforter with Clover Design Down Alternative Comforter for All Seasons 3 Pieces Bed Set with 2 Pillow Shams**Bedsure**$34.30**288 rev7mo ago](https://www.amazon.com/dp/B0FJY9Q5D9) [**Bedsure Feather Down Comforter King Size Luxurious Fluffy Hotel Duvet Insert with Storage Bag & 8 Corner Tabs PureWoven Ultra Soft Cotton Blend Fabric All Season Comforter 106x90 Inches White**Bedsure**$192.88**114 rev10mo ago](https://www.amazon.com/dp/B0F8TW2R2R) [**Down Comforter King Size All Season Medium Weight Fluffy White Duvet Insert Warm Feather Bedding Soft 100% Cotton Cover 90x106 Inch**Vexino**$54.41**594 rev11mo ago](https://www.amazon.com/dp/B0GJRT7CY9) [**L LOVSOUL Goose Feather Down Fiber Comforter King Size 100% Organic Cotton Fabric Duvet Insert 1200TC 750+Fill Power Hotel Collection All Season Grey Bedding Comforters with 8 Tabs**L LOVSOUL**$94.24**2,790 rev1y ago](https://www.amazon.com/dp/B0DZT9JFH1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Down Comforter King Size All Season Medium Weight Fluffy White Duvet Insert Warm Feather Bedding Soft 100% Cotton Cover 90x106 Inch**Vexino**$54.41**4.5★**▲ 347%**](https://www.amazon.com/dp/B0GJRT7CY9) [**Martha Stewart Luxury White Goose Feathers Down Fiber Duvet Insert King Size - Hotel Collection 100% Cotton Cover Comforter All Season Medium Warmth Breathable Hypoallergenic 106 x 90 Inch**Martha Stewart**$78.28**4.6★**▲ 346%**](https://www.amazon.com/dp/B0GK8MQZ9Z) [**Bedsure King Size Comforter Set White Soft Prewashed King Bedding Quilted Comforter with Clover Design Down Alternative Comforter for All Seasons 3 Pieces Bed Set with 2 Pillow Shams**Bedsure**$34.30**4.5★**▲ 179%**](https://www.amazon.com/dp/B0FJY9Q5D9) [**Hotel Grand Luxury White Goose Feather Down Fiber Comforter King Size 100% Cotton All Season Duvet Insert King Fluffy Medium Warmth Bedding Comforter with 8 Corner Loops White 106x90 Inch**Hotel Grand**$71.35**4.6★**▲ 94%**](https://www.amazon.com/dp/B0DHV7JW3N) [**Bedsure Comforter Duvet Insert - Quilted Comforters Oversized King Size All Season Duvet GentleSoft Down Alternative Bedding with 8 Tabs Gifts for Women/Men White Oversized King 116 x 98 Inches**Bedsure**$75.64**4.7★**▲ 80%**](https://www.amazon.com/dp/B0BTHK7NW4)
**~~View all trending →~~**
## **What buyers say about down comforter king size**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**18%
*“Love the comfort”*
**Soft Feel**16%
*“Soft and fluffy”*
**Warmth**10%
*“Keeps you very warm”*
**Quality-Overall**10%
*“Amazing Quality”*
**Value For Money**6%
*“Very affordable”*
**Weight Light**6%
*“Lightweight and comfortable”*
**Size-Overall**5%
*“Perfect Fit”*
**Fluffiness**3%
*“Soft and fluffy”*
**Color**3%
*“A great neutral color”*
**Advertised Vs Actual Product**2%
*“As advertised”*
### **What buyers complain about **
**Size-Overall**11%
*“Very large”*
**Quality-Overall**8%
*“Cheap quality”*
**Thickness**6%
*“Not thick as advertised”*
**Fluffiness**4%
*“its definitely NOT fluffy”*
**Advertised Vs Actual Product**3%
*“False advertising”*
**Material Quality**3%
*“Cheap material”*
**Comfort-Overall**3%
*“Not as comfy as I was hoping for”*
**Heating**3%
*“not breathable and very hot”*
**Washability**3%
*“It also doesn't wash well”*
**Smell**3%
*“this smell is rancid”*
### **Top return reasons **
**Size-Overall**31%
**Color**9%
**Material Quality**8%
**Thin**7%
**Advertised Vs Actual Product**7%
**Comfort-Overall**6%
**Warmth**5%
**Value For Money**4%
**Quality-Overall**3%
**Weight Heavy**3%
## **Common questions**
- **Is down comforter king size profitable to sell on Amazon United States?**
- The niche generates $4.0M/yr across 57 tracked products. 10 of 12 products launched in the last 360 days are still selling. 90-day search growth is -17.6%. Flapen's verdict: Worth a look (56/100).
- **How competitive is the down comforter king size niche?**
- 32 brands and 44 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 62% of demand.
- **What do buyers complain about in down comforter king size?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Thickness. The return rate is 3.3%.
- **When does demand for down comforter king size peak?**
- Demand peaks in Jan–Nov–Dec; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the down comforter king size niche?**
- Listings span $20.16–$192.88; the average listing price is $65.23 (sweet spot $15–$100). The average incumbent carries 16,019 reviews — the moat a new listing must climb.
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