Ideal Knee
FailDemand is soft, at -3.7% this quarter, so Ideal Knee is a Fail.
- Flapen Score
- 48 / 100Top 46% of 8,101 Sports & Outdoors niches · +1 vs the category median of 4748
- Market size
- $106K/yr54K searches / yr
- 90-day growth
- -3.7%search demand this quarter
- Competition
- 65%top-5 click share · 13 brands · 16 sellers
Flapen Score
Ideal Knee against its category
The dotted line is the Sports & Outdoors average. Past it, Ideal Knee is stronger. Inside it, weaker.
Market
The Ideal Knee market on Amazon at a glance
Shoppers on Amazon United States searched for Ideal Knee 54K times last year and spent an estimated $106K. The top 5 brands take 83% of clicks. Demand peaks in Apr–May–Jun. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 4.4% of those searches ended in a purchase.
Shoppers searched for this 54K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.4% of those searches ended in a purchase. Searches in the last 90 days moved -3.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $106K a year.
- Searches, last 12 months
- 54K
- Growth, 90 days vs prior 90
- -3.7%
- Conversion, latest week
- 4.4%
- Market size, estimated
- $106Ka year
- Peak month
- May4.7× the quietest month
- Top search term
- knee extension device12K searches a year
02 · Price
A sale here is worth $44.30.
Listings sell for $44.30 on average, from $6.04 to $127.40. Amazon reports units sold in ranges. This niche sold 2K to 3K a year. The average listing sells 0 to 100 of them. At $44.30 that is $0 to $4K a year per listing.
- Average price
- $44.30inside the $15 to $100 sweet spot
- Price range
- $6.04–$127.40
- 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–$4K
- Returns
- 1.6%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.3% of listings are out of stock. The average listing ranks #415 within Weight Machines. It carries 1,434 reviews at 4.28 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 4.3%
- Average rank
- #415in Weight Machines
- Average rating
- 4.28 starsAmazon United States average 4.42 stars
- Average reviews
- 1,434per listing
- Listings tracked
- 18
04 · Newcomers
0 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 0 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
- 3
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 43 months
Products
Top Ideal Knee 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 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
IdealStretch - Original Patented Hamstring Stretcher Lower Back Stretcher Hip Stretcher & Calf Stretcher - Pain Relief & Leg Stretcher
- Price
- $52.46
- Rating
- 4.5/5
- Reviews
- 2,422
- Age
- 16y ago

RMS Premium 35 Leg Lifter with Hand Strap & Foot Loop Long-Term Orthopedic Daily Living Aid for Chronic Hip Knee & Mobility Limitations
- Price
- $9.76
- Rating
- 4.5/5
- Reviews
- 15,165
- Age
- 8y ago

Acozycoo Stretching Strap with Loops for Physical Therapy Yoga Strap for Stretching Home Workout Pilate & Flexibility Training Non-Elastic Exercise Stretch Band for Hamstring Leg Stretcher Belt Flexibility Fascia (Blue)
- Price
- $8.60
- Rating
- 4.7/5
- Reviews
- 708
- Age
- 1y ago

IdealKnee Extension Device - Knee Stretcher - Knee Rehabilitation Equipment - Advanced Knee Extension & Pain Relief Device - Ideal for ACL MCL Recovery Athletes Therapy & Rehab
- Price
- $127.40
- Rating
- 4.5/5
- Reviews
- 711
- Age
- 7y ago

IdealKnee Extension Device - Knee Stretcher - Knee Rehabilitation Equipment - Advanced Knee Extension & Pain Relief Device - Ideal for ACL MCL Recovery Athletes Therapy & Rehab
- Price
- $122.01
- Rating
- 4.5/5
- Reviews
- 711
- Age
- 7y ago
Trending
estimated 90-day click momentum
Acozycoo Stretching Strap with Loops for Physical Therapy Yoga Strap for Stretching Home Workout Pilate & Flexibility Training Non-Elastic Exercise Stretch Band for Hamstring Leg Stretcher Belt Flexibility Fascia (Blue)
- Price
- $8.60
- Rating
- 4.7/5
- Reviews
- 708
- Age
- 1y ago

Hamstring Stretcher for Knee Extension Adjustable Leg Stretcher for Flexibility Calf Hip & Lower Back Stretching Equipment Knee Stretcher for Mobility Yoga Physical Therapy & ACL Recovery
- Price
- $40.68
- Rating
- 4.6/5
- Reviews
- 21
- Age
- 1y ago

Ajqxh Knee Extension Recovery Device Essential Aid for Knee Surgery Rehabilitation Adjustable Buckle Leg Straightening and Flexibility Equipment Post Knee Surgery MustHaves(4PCS Weights Included)
- Price
- $18.91
- Rating
- 3.9/5
- Reviews
- 3
- Age
- 7mo ago

Knee Extension Device Hamstring Leg Stretcher for Lower Body Flexibility Improves Range of Motion
- Price
- $53.75
- Rating
- 4.2/5
- Reviews
- 21
- Age
- 7mo ago

RMS Premium 35 Leg Lifter with Hand Strap & Foot Loop Long-Term Orthopedic Daily Living Aid for Chronic Hip Knee & Mobility Limitations
- Price
- $9.76
- Rating
- 4.5/5
- Reviews
- 15,165
- Age
- 8y ago
Newest
by launch date
Ajqxh Knee Extension Recovery Device Essential Aid for Knee Surgery Rehabilitation Adjustable Buckle Leg Straightening and Flexibility Equipment Post Knee Surgery MustHaves(4PCS Weights Included)
- Price
- $18.91
- Rating
- 3.9/5
- Reviews
- 3
- Age
- 7mo ago

Knee Extension Device Hamstring Leg Stretcher for Lower Body Flexibility Improves Range of Motion
- Price
- $53.75
- Rating
- 4.2/5
- Reviews
- 21
- Age
- 7mo ago

Whiidoom Hamstring Stretcher Knee Extension Device Adjustable Lower Back Stretcher Calf Stretcher Leg Stretcher and Hip Stretcher for Knee Pain Relief
- Price
- $37.72
- Rating
- 3.5/5
- Reviews
- 51
- Age
- 10mo ago

Ajqxh Knee Extension Recovery Device Strengthening Equipment for Knee Surgery Rehabilitation(4Pcs Weights Included)
- Price
- $17.48
- Rating
- 3.8/5
- Reviews
- 10
- Age
- 1y ago

Hamstring Stretcher Knee Extension Device Lower Back Hip & Calf Stretching
- Price
- $42.00
- Rating
- 4.7/5
- Reviews
- 103
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 65% of clicks. Leaders hold, but buyers still shop past them.
Brands
13 flat
Sellers
16
Est. top-5 brand share
83%
Top 20: 100%
Est. top-5 click share
65%
Top 20: 100%
Open market
12%
- IdealStretch40%
- RMS14%
- Zakdbbry13%
- Acozycoo11%
- PressLoo5%
- Generic5%
- Open — no brand owns it (7 brands, 12%)
Demand
Ideal Knee search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Apr, May, Jun · busiest ÷ quietest = 4.7×
Search terms
Top Ideal Knee search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- knee extension device12K/yr
- knee stretcher9K/yr
- knee straightener7K/yr
- ideal knee extension device6K/yr
- ideal knee4K/yr
- leg straightener5K/yr
- knee straightening device4K/yr
- knee extension3K/yr
- knee stretcher device4K/yr
Reviews and returns
What reviews say buyers love and hate about Ideal Knee
We read the reviews and the return reasons for every product selling here.
“Small bag”
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 Ideal Knee 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









