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summer duvet insert

Skip it

A deep review moat (17,315 avg reviews) — this niche doesn't clear our bar today.

Market size 25Growth 84Conversion 23Competition 37Returns 56Price range 77Avg price 91Brand share 31Review moat 18Quality gap 32

Avg price

Great$57.17

avg listing price — sweet spot $15–$100

Growth

Great+83.3%

90-day search growth — must beat 0% to launch

Price range

Great$21.76–$122.16

cheapest to priciest tracked listing — scored on the share inside $15–$100

Returns

Good2.8%

return rate — above 5% kills the launch gate

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Brand share

Okay87%

top-5 brand share — brands hold most of the demand

Market size

Okay$102K

$102K/yr · 96K searches

Conversion

Bad1.9%

search→purchase rate — share of searches ending in a sale

Review moat

Bad17,315.32

avg incumbent reviews — the moat a new listing must climb

According to Flapen's Amazon United States niche tracking, summer duvet insert is a $102K/yr Amazon United States market (96K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Skip it — 45/100.

Data updated Jul 18, 2026 · scored weekly · How we score niches

summer duvet insert market data

Units sold / yr
2K–2K
avg 0–100/product
Revenue / yr
$86K–$114K
units × avg price
Conversion rate
1.9%
Avg BSR
#33
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
0.0%
Avg brand age
47 months
Avg seller age
179 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 falling

Sellers

16

Top-5 brand share

87%

Top 20: 100%

Top-5 click share

63%

Top 20: 98%

Open market

10%

  • Bedsure47%
  • MEELUS17%
  • Amazon Basics9%
  • Globon9%
  • DOWNCOOL5%
  • Olive + Crate3%
  • Open — no brand owns it (5 brands, 10%)

Demand & seasonality

Weekly Amazon search volume, last 97 weeks — +83.3% search growth over the last 90 days.
8K6KSpike '25Spike '26DecMarJunAugNovMarMay

Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 4.9×

Top summer duvet insert search terms

  • summer duvet insert48K/yr
  • summer duvet26K/yr
  • summer weight duvet insert9K/yr
  • summer duvet insert queen4K/yr
  • ultra thin duvet insert4K/yr
  • lightweight summer duvet2K/yr
  • light weight duvet insert queen2K/yr
All search terms

Top summer duvet insert 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%5%$5K10%$10K15%$15K20%$20K101001K10K100K1.0M Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 22 tracked products in this niche — three views at once, no toggling.

What buyers say about summer duvet insert

What buyers praise and complain about, mined from review topics.

What buyers love

Comfort-Overall16%

“Very comfortable to sleep”

Warmth12%

“Comfortable and warm”

Weight Light11%

“Love that its lightweight”

Quality-Overall10%

“Affordable quality”

Soft Feel10%

“Extremely soft”

Value For Money7%

“Amazing price”

Size-Overall5%

“It fits the bed right”

Advertised Vs Actual Product3%

“As advertised”

Fluffiness3%

“they make it so fluffy I love”

Material Quality2%

“Super soft material”

What buyers complain about

Thickness12%

“Not thick as advertised”

Size-Overall8%

“Too small”

Quality-Overall6%

“Mid to low quality”

Advertised Vs Actual Product5%

“Nothing like the picture”

Fluffiness4%

“Not fluffy”

Heating4%

“Runs hot”

Value For Money3%

“The price alone should have been a red flag”

Material Quality3%

“Bad material”

Warmth3%

“ALL SEASON IS TOO WARM”

Washability3%

“It also doesn't wash well”

Top return reasons

Size-Overall31%
Thin9%
Comfort-Overall7%
Warmth7%
Material Quality7%
Advertised Vs Actual Product6%
Weight Heavy5%
Value For Money4%
Quality-Overall4%
Weight Light3%

Common questions

Is summer duvet insert profitable to sell on Amazon United States?
The niche generates $102K/yr across 22 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +83.3%. Flapen's verdict: Skip it (45/100).
How competitive is the summer duvet insert niche?
11 brands and 16 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 87% of demand.
What do buyers complain about in summer duvet insert?
Top complaints mined from reviews: Thickness, Size-Overall, Quality-Overall. The return rate is 2.8%.
When does demand for summer duvet insert peak?
Demand peaks in Apr–May–Jun–Jul; the busiest month runs 4.9× the quietest.
What does it cost to enter the summer duvet insert niche?
Listings span $21.76–$122.16; the average listing price is $57.17 (sweet spot $15–$100). The average incumbent carries 17,315 reviews — the moat a new listing must climb.