13x21 Pillow Insert
FailShoppers spend an estimated $42K a year here, so 13x21 Pillow Insert is a Fail.
- Flapen Score
- 41 / 100Ranks 8,763 of 11,240 Home & Kitchen niches · −8 vs the category median of 4941
- Market size
- $42K/yr16K searches / yr
- 90-day growth
- +22.7%search demand this quarter
- Competition
- 77%top-5 click share · 7 brands · 9 sellers
Flapen Score
13x21 Pillow Insert against its category
The dotted line is the Home & Kitchen average. Past it, 13x21 Pillow Insert is stronger. Inside it, weaker.
Market
The 13x21 Pillow Insert market on Amazon at a glance
Shoppers on Amazon United States searched for 13x21 Pillow Insert 16K times last year and spent an estimated $42K. The top 5 brands take 93% of clicks. Flapen scores it 41 out of 100, a Fail.
01 · Demand
An estimated 11.9% of those searches ended in a purchase.
Shoppers searched for this 16K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 11.9% of those searches ended in a purchase. Searches in the last 90 days moved +22.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $42K a year.
- Searches, last 12 months
- 16K
- Growth, 90 days vs prior 90
- +22.7%
- Conversion, latest week
- 11.9%
- Market size, estimated
- $42Ka year
- Top search term
- 13x21 pillow insert11K searches a year
02 · Price
A sale here is worth $22.00.
Listings sell for $22.00 on average, from $9.62 to $33.31. Amazon reports units sold in ranges. This niche sold 3K to 3K a year. The average listing sells 250 to 500 of them. At $22.00 that is $6K to $11K a year per listing.
- Average price
- $22.00inside the $15 to $100 sweet spot
- Price range
- $9.62–$33.31
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 3K–3K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $6K–$11K
- Returns
- 3.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
83% 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 #64 within Decorative Pillows, Inserts & Covers. It carries 27,689 reviews at 4.53 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 83%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #64in Decorative Pillows, Inserts & Covers
- Average rating
- 4.53 starsAmazon United States average 4.42 stars
- Average reviews
- 27,689per listing
- Listings tracked
- 12
04 · Newcomers
Brands here are settling in.
The brands on the shelf have sold for 44 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
- 44 months
Products
Top 13x21 Pillow Insert products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
MoonRest 13x21 Inch Synthetic Down Alternative Rectangle Pillow Insert Form Stuffer for Sofa Shams Decorative Throw Pillow Cushion and Bed Pillow Stuffing - Hypoallergenic 13X 21
- Price
- $18.84
- Rating
- 4.3/5
- Reviews
- 270
- Age
- 6y ago

MIULEE 12x20 Pillow Insert Throw Pillow for Couch Sofa Bed
- Price
- $9.76
- Rating
- 4.5/5
- Reviews
- 38,998
- Age
- 6y ago

Pillowflex Premium Polyester Pillow Insert - 13x21 Soft Decorative Pillow
- Price
- $31.99
- Rating
- 4.5/5
- Reviews
- 195
- Age
- 8y ago

MIULEE Pillow Insert 13x21 Inch Decorative Rectangle Throw Pillow Inserts
- Price
- $17.01
- Rating
- 4.5/5
- Reviews
- 6,374
- Age
- 1y ago

MoonRest Synthetic Down Alternative 13x21 Lumbar Pillow Insert Form for Decorative Throw Pillow Sofa Cushions Body and Bed - Pack of 2- Size 13 x 21
- Price
- $33.31
- Rating
- 4.5/5
- Reviews
- 1,630
- Age
- 6y ago
Trending
estimated 90-day click momentum
CLOUDOTE Down Alternative Throw Pillow Insert (13x21 Pack of 1) Decorative Pillow for Sofa Couch Bed Chair Cushion
- Price
- $15.92
- Rating
- 4.6/5
- Reviews
- 169
- Age
- 2y ago

MIULEE Pillow Insert 12x20 Inch Decorative Rectangle Throw Pillow Insert Premium Fluffy Pillow Forms Stuffer for Sofa Couch Living Room
- Price
- $9.62
- Rating
- 4.5/5
- Reviews
- 6,374
- Age
- 3y ago

MoonRest Synthetic Down Alternative 13x21 Lumbar Pillow Insert Form for Decorative Throw Pillow Sofa Cushions Body and Bed - Pack of 2- Size 13 x 21
- Price
- $33.31
- Rating
- 4.5/5
- Reviews
- 1,630
- Age
- 6y ago

CLOUDOTE Down Alternative Throw Pillow Insert (13x21 Pack of 2) Decorative Pillow for Sofa Couch Bed Chair Cushion
- Price
- $30.95
- Rating
- 4.6/5
- Reviews
- 169
- Age
- 1y ago

MIULEE 13x21 Inch Throw Pillow Insert for Couch Sofa Bed
- Price
- $20.06
- Rating
- 4.5/5
- Reviews
- 38,998
- Age
- 1y ago
Newest
by launch date
MIULEE Pillow Insert 13x21 Inch Decorative Rectangle Throw Pillow Inserts
- Price
- $17.01
- Rating
- 4.5/5
- Reviews
- 6,374
- Age
- 1y ago

MIULEE 13x21 Inch Throw Pillow Insert for Couch Sofa Bed
- Price
- $20.06
- Rating
- 4.5/5
- Reviews
- 38,998
- Age
- 1y ago

CLOUDOTE Down Alternative Throw Pillow Insert (13x21 Pack of 2) Decorative Pillow for Sofa Couch Bed Chair Cushion
- Price
- $30.95
- Rating
- 4.6/5
- Reviews
- 169
- Age
- 1y ago

CLOUDOTE Down Alternative Throw Pillow Insert (13x21 Pack of 1) Decorative Pillow for Sofa Couch Bed Chair Cushion
- Price
- $15.92
- Rating
- 4.6/5
- Reviews
- 169
- Age
- 2y ago

Oubonun 14 x 22 Pillow Inserts (Set of 2) - Lumbar Pillow with 100% Cotton Cover - Rectangle Square Interior Sofa Pillow Inserts - Decorative Pillow Insert Pair - White Couch Pillow
- Price
- $26.62
- Rating
- 4.8/5
- Reviews
- 16,996
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 77% of clicks. A locked shelf that new listings rarely crack.
Brands
7 rising
Sellers
9
Est. top-5 brand share
93%
Top 20: 100%
Est. top-5 click share
77%
Top 20: 100%
Open market
3%
- MoonRest44%
- MIULEE29%
- Pillowflex10%
- Utopia Bedding5%
- CLOUDOTE4%
- puredown4%
- Open — no brand owns it (1 brand, 3%)
Demand
13x21 Pillow Insert search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul · busiest ÷ quietest = 1.6× · 11 of 12 months tracked
Reviews and returns
What reviews say buyers love and hate about 13x21 Pillow Insert
We read the reviews and the return reasons for every product selling here.
“its just low quality and flat”
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.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 13x21 Pillow Insert questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









