21x21 Pillow Insert
FailShoppers spend an estimated $31K a year here, so 21x21 Pillow Insert is a Fail.
- Flapen Score
- 38 / 100Ranks 9,504 of 11,240 Home & Kitchen niches · −11 vs the category median of 4938
- Market size
- $31K/yr31K searches / yr
- 90-day growth
- -5.7%search demand this quarter
- Competition
- 59%top-5 click share · 10 brands · 16 sellers
Flapen Score
21x21 Pillow Insert against its category
The dotted line is the Home & Kitchen average. Past it, 21x21 Pillow Insert is stronger. Inside it, weaker.
Market
The 21x21 Pillow Insert market on Amazon at a glance
Shoppers on Amazon United States searched for 21x21 Pillow Insert 31K times last year and spent an estimated $31K. The top 5 brands take 91% of clicks. Demand peaks in Sep. Flapen scores it 38 out of 100, a Fail.
01 · Demand
An estimated 4.0% of those searches ended in a purchase.
Shoppers searched for this 31K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.0% of those searches ended in a purchase. Searches in the last 90 days moved -5.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $31K a year.
- Searches, last 12 months
- 31K
- Growth, 90 days vs prior 90
- -5.7%
- Conversion, latest week
- 4.0%
- Market size, estimated
- $31Ka year
- Peak month
- September2.1× the quietest month
- Top search term
- down alternative pillow insert16K searches a year
02 · Price
A sale here is worth $24.86.
Listings sell for $24.86 on average, from $13.29 to $45.96. Amazon reports units sold in ranges. This niche sold 2K to 3K a year. The average listing sells 0 to 100 of them. At $24.86 that is $0 to $2K a year per listing.
- Average price
- $24.86inside the $15 to $100 sweet spot
- Price range
- $13.29–$45.96
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–3K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$2K
- Returns
- 1.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
100% 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 #46 within Decorative Pillows, Inserts & Covers. It carries 31,169 reviews at 4.66 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #46in Decorative Pillows, Inserts & Covers
- Average rating
- 4.66 starsAmazon United States average 4.42 stars
- Average reviews
- 31,169per listing
- Listings tracked
- 25
04 · Newcomers
3 of last year's 5 launches cleared the first-year sales bar.
5 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 50 months on average, so the names here are settling in.
- Launched, last 12 months
- 5
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 50 months
Products
Top 21x21 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
MIULEE 20x20 Pillow Inserts Fluffy Down Alternative Filling Pack of 2
- Price
- $21.92
- Rating
- 4.8/5
- Reviews
- 301
- Age
- 1y ago
Amazon Basics Square Hypoallergenic Down Alternative Pillow Insert Machine Washable Softness and Support 20 inch 2-Pack
- Price
- $17.54
- Rating
- 4.3/5
- Reviews
- 1,946
- Age
- 9mo ago
MIULEE 20x20 Pillow Inserts 2 Pack Premium Down Alternative Throw Pillows
- Price
- $24.07
- Rating
- 4.6/5
- Reviews
- 2,076
- Age
- 3y ago
Pillowflex Synthetic Down Pillow Insert 20x20 in - Karate Chop Pillow
- Price
- $29.74
- Rating
- 4.7/5
- Reviews
- 11,608
- Age
- 12y ago
Utopia Bedding 18x18 Pillow Inserts White Throw Pillows for Couch 2 Pack
- Price
- $16.07
- Rating
- 4.6/5
- Reviews
- 217,964
- Age
- 10y ago
Trending
estimated 90-day click momentumAmazon Basics Square Hypoallergenic Down Alternative Pillow Insert Machine Washable Softness and Support 20 inch 2-Pack
- Price
- $17.54
- Rating
- 4.3/5
- Reviews
- 1,946
- Age
- 9mo ago
MIULEE 18x18 Pillows Inserts Pack of 4 Down Alternative Virgin Filling
- Price
- $20.95
- Rating
- 4.8/5
- Reviews
- 532
- Age
- 6mo ago
MIULEE 20x20 Pillows Inserts Pack of 2 Down Alternative Virgin Filling
- Price
- $21.55
- Rating
- 4.8/5
- Reviews
- 532
- Age
- 6mo ago
MIULEE 12x20 Down Alternative Pillow Insert Decorative Throw Pillow 12 x 20 Inch Body Bed Sleeping Ultra Soft Fluffy Form for Sofa Couch Bed
- Price
- $13.29
- Rating
- 4.7/5
- Reviews
- 805
- Age
- 2y ago
MIULEE 20x20 Pillow Inserts Fluffy Down Alternative Filling Pack of 2
- Price
- $21.92
- Rating
- 4.8/5
- Reviews
- 301
- Age
- 1y ago
Newest
by launch dateMIULEE 20x20 Pillows Inserts Pack of 2 Down Alternative Virgin Filling
- Price
- $21.55
- Rating
- 4.8/5
- Reviews
- 532
- Age
- 6mo ago
MIULEE 18x18 Pillows Inserts Pack of 4 Down Alternative Virgin Filling
- Price
- $20.95
- Rating
- 4.8/5
- Reviews
- 532
- Age
- 6mo ago
Ashler Home Deco Synthetic Down Pillow Inserts 20x20 Down Alternative Throw Pillows Insert Sleeping Pillows with 100% Cotton Cover Decorative Pillow Stuffer for Sofa Couch Bed(Set of 2 White)
- Price
- $25.74
- Rating
- 4.8/5
- Reviews
- 89
- Age
- 8mo ago
Amazon Basics Square Hypoallergenic Down Alternative Pillow Insert Machine Washable Softness and Support 20 inch 2-Pack
- Price
- $17.54
- Rating
- 4.3/5
- Reviews
- 1,946
- Age
- 9mo ago
MIULEE 20x20 Pillow Inserts Fluffy Down Alternative Filling Pack of 2
- Price
- $21.92
- Rating
- 4.8/5
- Reviews
- 301
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 59% of clicks. Leaders hold, but buyers still shop past them.
Brands
10 rising
Sellers
16
Est. top-5 brand share
91%
Top 20: 100%
Est. top-5 click share
59%
Top 20: 94%
Open market
6%
- MIULEE42%
- Amazon Basics19%
- Utopia Bedding13%
- Pillowflex10%
- Artscope8%
- puredown2%
- Open — no brand owns it (4 brands, 6%)
Demand
21x21 Pillow Insert search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 2.1×
Search terms
Top 21x21 Pillow Insert search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- down alternative pillow insert16K/yr
- down alternative pillow inserts4K/yr
- 20x20 down alternative pillow insert4K/yr
- 20x20 pillow inserts down alternative3K/yr
- down alternative throw pillow3K/yr
Reviews and returns
What reviews say buyers love and hate about 21x21 Pillow Insert
We read the reviews and the return reasons for every product selling here.
“Not full and fluffy”
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.
15 topics
Keep looking
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 21x21 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