Under Knee Pillow for Sleeping on Back
MaybeProducts sell for $26.25 on average, inside the sweet spot. But demand is soft, at -9.7% this quarter, so Under Knee Pillow for Sleeping on Back is a Maybe.
- Flapen Score
- 55 / 100Top 24% of 14,768 Health & Household niches · +6 vs the category median of 4955
- Market size
- $772K/yr550K searches / yr
- 90-day growth
- -9.7%search demand this quarter
- Competition
- 56%top-5 click share · 22 brands · 27 sellers
Flapen Score
Under Knee Pillow for Sleeping on Back against its category
The dotted line is the Health & Household average. Past it, Under Knee Pillow for Sleeping on Back is stronger. Inside it, weaker.
Market
The Under Knee Pillow for Sleeping on Back market on Amazon at a glance
Shoppers on Amazon United States searched for Under Knee Pillow for Sleeping on Back 550K times last year and spent an estimated $772K. The top 5 brands take 62% of clicks. Flapen scores it 55 out of 100, a Maybe.
01 · Demand
An estimated 5.3% of those searches ended in a purchase.
Shoppers searched for this 550K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.3% of those searches ended in a purchase. Searches in the last 90 days moved -9.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $772K a year.
- Searches, last 12 months
- 550K
- Growth, 90 days vs prior 90
- -9.7%
- Conversion, latest week
- 5.3%
- Market size, estimated
- $772Ka year
- Peak month
- April1.4× the quietest month
- Top search term
- knee pillow for back sleeping124K searches a year
02 · Price
A sale here is worth $26.25.
Listings sell for $26.25 on average, from $11.29 to $37.30. Amazon reports units sold in ranges. This niche sold 25K to 30K a year. The average listing sells 750 to 1,000 of them. At $26.25 that is $20K to $26K a year per listing.
- Average price
- $26.25inside the $15 to $100 sweet spot
- Price range
- $11.29–$37.30
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 25K–30K
- Units per listing a year
- 750–1,000
- Revenue per listing a year
- $20K–$26K
- Returns
- 3.4%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, 3.3% of listings are out of stock. The average listing ranks #171 within Bedroom Aids & Accessories. It carries 4,039 reviews at 4.37 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 3.3%
- Average rank
- #171in Bedroom Aids & Accessories
- Average rating
- 4.37 starsAmazon United States average 4.42 stars
- Average reviews
- 4,039per listing
- Listings tracked
- 25
04 · Newcomers
4 of last year's 4 launches cleared the first-year sales bar.
4 products launched here in the last 12 months. 4 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 43 months on average, so the names here are settling in.
- Launched, last 12 months
- 4
- Successful launches
- 4Amazon's first-year sales bar
- Average brand age
- 43 months
Products
Top Under Knee Pillow for Sleeping on Back 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 14, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Everlasting Comfort Under Knee Pillow for Back Sleeping - Memory Foam Half Moon Leg Bolster Pillow for Back Pain Thoracic Support
- Price
- $29.22
- Rating
- 4.5/5
- Reviews
- 5,692
- Age
- 7y ago
5 STARS UNITED Knee Pillow for Back Sleeping Half Moon Bolster Pillow for Legs Under Knee Pillow for Sleeping on Back Memory Foam Leg Pillow for Back Pain White
- Price
- $33.30
- Rating
- 4.4/5
- Reviews
- 7,984
- Age
- 7y ago
TranquilRelax Knee Pillow for Back Sleeping Memory Foam Half Moon Bolster Pillow for Legs Under Knee Support Ankle & Foot Comfort Orthopedic Pillow for Side Sleepers (Grey 20.4 x 8 x 4.9)
- Price
- $17.63
- Rating
- 4.3/5
- Reviews
- 572
- Age
- 1y ago
MEGCXIT Leg Pillow Elevation Blood Circulation Leg Wedge for Elevation for Swelling Leg Elevating Pillow for After Surgery Memory Foam Foot Knee Pillow for Back Sleeping 23.616.88 Inch White/Grey
- Price
- $29.76
- Rating
- 4.6/5
- Reviews
- 2,670
- Age
- 2y ago
Knee Pillow for Back Sleeping | Large Half Moon Bolster Pillow for Legs Under Knee Pillow for Sleeping on Back (20.5x 8x 4.5) Leg Pillow for Ankle and Foot Comfort Machine Washable Cover Grey
- Price
- $20.12
- Rating
- 4.2/5
- Reviews
- 3,137
- Age
- 6y ago
Trending
estimated 90-day click momentum
Vekkia Knee Pillow for Back Sleeping 7 Wedge Pillow for Knees & Leg Versatile Wedge with Dual Handles Comfortable Support for Post-Surgery Lower Back&Hip Pain Relief Blood Circulation Swelling
- Price
- $29.21
- Rating
- 4.6/5
- Reviews
- 8,923
- Age
- 6mo ago
LVYSHOW Semi Roll Pillow Under Knee Pillow
- Price
- $19.43
- Rating
- 4.4/5
- Reviews
- 57
- Age
- 10mo ago
BlissTrends Memory Foam Knee Pillow Knee Pillow for Side Sleepers Leg Pillows for Sleeping Blood Circulation Elevation Pillow for Spine Aligning Sciatica Back Hip Knee Ankle Pain Grey
- Price
- $11.29
- Rating
- 4.4/5
- Reviews
- 2,813
- Age
- 2y ago
Ruizman Knee Pillow for Back Sleeping - Half Moon Bolster Pillow for Legs - Cooling Under Knee Pillow for Sleeping on Back Leg Support Foot Elevation (Misty Blue)
- Price
- $24.22
- Rating
- 4.3/5
- Reviews
- 255
- Age
- 2y ago
5 STARS UNITED Knee Pillow for Back Sleeping Half Moon Bolster Pillow for Legs Under Knee Pillow for Sleeping on Back Memory Foam Leg Pillow for Back Pain Gray
- Price
- $34.41
- Rating
- 4.4/5
- Reviews
- 7,984
- Age
- 4y ago
Newest
by launch dateVekkia Knee Pillow for Back Sleeping 7 Wedge Pillow for Knees & Leg Versatile Wedge with Dual Handles Comfortable Support for Post-Surgery Lower Back&Hip Pain Relief Blood Circulation Swelling
- Price
- $29.21
- Rating
- 4.6/5
- Reviews
- 8,923
- Age
- 6mo ago
LVYSHOW Semi Roll Pillow Under Knee Pillow
- Price
- $19.43
- Rating
- 4.4/5
- Reviews
- 57
- Age
- 10mo ago
anzhixiu Half Moon Leg Bolster for Back Sleeping- Adjustable Height Under Knee Pillow for Ankles- Pure Memory Foam Leg Pillow for Sleeping on The Bed- Bubble
- Price
- $25.74
- Rating
- 4.6/5
- Reviews
- 93
- Age
- 11mo ago
SweetSlubr Knee Pillow for Side Sleepers Half Moon Memory Foam Bolster Pillow for Legs Ergonomic Design Wedge Elevation Pillow for Side & Back Sleeping Under Knee Support Foot Ankle Lumbar White
- Price
- $17.71
- Rating
- 4.0/5
- Reviews
- 344
- Age
- 11mo ago
Shinnwa Knee Wedge Pillow Patented Convertible Knee Pillow for Back Sleeping Dual-Layer Memory Foam Triangle Pillow for Legs Post Surgery Knee Support Leg Elevation Back Pain Relief
- Price
- $33.72
- Rating
- 4.5/5
- Reviews
- 161
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 56% of clicks. Leaders hold, but buyers still shop past them.
Brands
22 rising
Sellers
27
Est. top-5 brand share
62%
Top 20: 98%
Est. top-5 click share
56%
Top 20: 95%
Open market
31%
- 5 STARS UNITED19%
- Everlasting Comfort17%
- AllSett Health10%
- TranquilRelax10%
- MEGCXIT8%
- Bedluxe6%
Demand
Under Knee Pillow for Sleeping on Back search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Under Knee Pillow for Sleeping on Back search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- knee pillow for back sleeping124K/yr
- bolster pillow for legs97K/yr
- under knee pillow for sleeping on back49K/yr
- under knee pillow41K/yr
- half moon pillow30K/yr
- knee bolster22K/yr
- leg bolster22K/yr
- leg pillow for back sleeping25K/yr
- knee bolster for sleeping19K/yr
- knee pillow for back sleepers18K/yr
Reviews and returns
What reviews say buyers love and hate about Under Knee Pillow for Sleeping on Back
We read the reviews and the return reasons for every product selling here.
“Too big”
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 Under Knee Pillow for Sleeping on Back 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