---
title: "Reduce Swelling Knee — $86K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/reduce-swelling-knee"
last_updated: "2026-08-11T12:35:51.635Z"
locale: en
meta:
description: "Niche score 54/100 · $86K/yr market · 51K searches/yr. A concentrated shelf (top 5 take 77% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $86K/yr market · 51K searches/yr. A concentrated shelf (top 5 take 77% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Reduce Swelling Knee — $86K/yr Amazon US Niche (2026) - Flapen"
---
# **reduce swelling knee**
**Worth a look**
Shows demand growing +185.9% this quarter, but a concentrated shelf (top 5 take 77% of clicks) keeps it on the watch list.
Market size 22Growth 97Conversion 78Competition 19Returns 26Price range 77Avg price 92Brand share 41Review moat 25Quality gap 94
**Growth**
**Incredible****+185.9%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Great****4.0★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Great****$21.80**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****7.8%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$9.53–$33.36**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Returns**
**Okay****4.9%**
return rate — above 5% kills the launch gate
**Review moat**
**Bad****4,696.92**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Bad****$86K**
$86K/yr · 51K searches
**Competition**
**Bad****77%**
top-5 click share — a locked-up shelf
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, reduce swelling knee is a $86K/yr Amazon United States market (51K searches/yr). The top 5 brands hold 81% of demand. Verdict: Worth a look — 54/100.
Data updated Jul 14, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **reduce swelling knee market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$87K–$109K**
- units × avg price
- **Conversion rate**
- **7.8%**
- **Avg BSR**
- **#237**
- **Page quality**
- **0%**
- **Prime**
- **83%**
- **Sponsored**
- **92%**
- **Out of stock**
- **15.4%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **171 days**
## **Competition & brand share**
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **
**Sellers**
**15**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**77%**
Top 20: 100%
**Open market**
**13%**
- Bodyprox31% - Trueknee19% - Tenvic14% - MAXVIVA10% - JHVW7% - Generic6% - Open — no brand owns it (5 brands, 13%)
## **Demand**
Weekly Amazon search volume, last 50 weeks — +185.9% search growth over the last 90 days.
25K15KSpike '25Spike '26Aug '25Sep '25Nov '25Jan '26Mar '26May '26
[**Open Trend **](https://flapen.com/research/us/health-household/reduce-swelling-knee/trend)
## **Top reduce swelling knee search terms**
- **tenvic knee strap**27K/yr+85.4%7.2% conv. - **tenvic knee strap for pickle ball**11K/yr>1,000%7.6% conv. - **tenvic**8K/yr+196.4%4.6% conv. - **tenvic airpad knee strap**3K/yr+541.5%6.7% conv. - **tenvic airpad**2K/yr-41.9%5.5% conv. [**All search terms **](https://flapen.com/research/us/health-household/reduce-swelling-knee/search-terms)
## **Top reduce swelling knee 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%10%$9K20%$17K30%$26K40%$34K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 12 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Bodyprox Patella Tendon Knee Strap 2 Pack Knee Pain Relief Support Brace**Bodyprox**$13.69**4.4★40,284 rev](https://www.amazon.com/dp/B07DLFP8Q5) [2**Trueknee Tenvic Knee Strap Patella Adjustable Sports Support Band with 3D Silicone Airpad Non-Slip Knee Stabilizer for Running Basketball Hiking Gym Fitness Men & Women 2 Pack (Black)**Trueknee**$33.36**3.7★8 rev](https://www.amazon.com/dp/B0GXKLJTG9) [3**Tenvic Knee Strap Adjustable Patella Tendon Support Band with 0.3in 3D Silicone Airbag & Dual Anti-Slip Patellar Stabilizer Brace for Running Basketball Hiking Gym Men Women2Pcs**Tenvic**$33.09**4.0★7 rev](https://www.amazon.com/dp/B0H1M9H3JX) [4**JHVW Patellar Tendon Support Strap 2-Pack Knee Brace for Women Men Adjustable Knee Patella Band Strap for Tendonitis Running Squats (Black)**JHVW**$16.36**4.2★428 rev](https://www.amazon.com/dp/B0F6L8K1HT) [5**Sport Knee Strap with 8-Shaped Padding & 360 Compression Support Non-Slip Silicone Design for Tennis Pickleball Padel and High-Impact Sports (Black)**Generic**$29.40**2.4★4 rev](https://www.amazon.com/dp/B0G6T8SVV8)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Tenvic Knee Strap Adjustable Patella Tendon Support Band with 0.3in 3D Silicone Airbag & Dual Anti-Slip Patellar Stabilizer Brace for Running Basketball Hiking Gym Men Women2Pcs**Tenvic**$33.09**7 rev2mo ago](https://www.amazon.com/dp/B0H1M9H3JX) [**Trueknee Tenvic Knee Strap Patella Adjustable Sports Support Band with 3D Silicone Airpad Non-Slip Knee Stabilizer for Running Basketball Hiking Gym Fitness Men & Women 2 Pack (Black)**Trueknee**$33.36**8 rev2mo ago](https://www.amazon.com/dp/B0GXKLJTG9) [**YIMED Patellar Tendon Support Strap Silicone Patella Knee Strap for Knee Pain Relief Adjustable Patella Band Knee Brace for Basketball Jumpers Knee Tendonitis Osgood Schlatter (Black 1 Pack)**YIMED**$25.67**31 rev3mo ago](https://www.amazon.com/dp/B0GV41KM9J) [**Healrecux Patella Band Knee Strap Patella Tendon Support for Knee Pain & Tendonitis Patella Stabilizer Knee Brace for Running Basketball Jumpers Knee Tennis Volleyball & Squats - Inky 1 Pack**Healrecux**$18.77**4 rev6mo ago](https://www.amazon.com/dp/B0GFN79G39) [**Sport Knee Strap with 8-Shaped Padding & 360 Compression Support Non-Slip Silicone Design for Tennis Pickleball Padel and High-Impact Sports (Black)**Generic**$29.40**4 rev8mo ago](https://www.amazon.com/dp/B0G6T8SVV8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Used item. Do not purchase.Patellar Tendon Strap**MAXVIVA**$18.92**4.0★**▲ 30%**](https://www.amazon.com/dp/B0H125BJ1Z) [**Trueknee Tenvic Knee Strap Patella Adjustable Sports Support Band with 3D Silicone Airpad Non-Slip Knee Stabilizer for Running Basketball Hiking Gym Fitness Men & Women 2 Pack (Black)**Trueknee**$33.36**3.7★**▲ 30%**](https://www.amazon.com/dp/B0GXKLJTG9) [**Tenvic Knee Strap Adjustable Patella Tendon Support Band with 0.3in 3D Silicone Airbag & Dual Anti-Slip Patellar Stabilizer Brace for Running Basketball Hiking Gym Men Women2Pcs**Tenvic**$33.09**4.0★**▲ 30%**](https://www.amazon.com/dp/B0H1M9H3JX) [**Stryde precision knee strap- 2 Pack Silicone Patellar Tendon Support Strap for Jumpers Knee Patellar Tendonitis Pain Relief Patella Band Knee Strap for Running Hiking Basketball SoccerVolleyball Tennis Workout**Patella**$24.91**3.9★**▲ 29%**](https://www.amazon.com/dp/B0GQN8S96F) [**YIMED Patellar Tendon Support Strap Silicone Patella Knee Strap for Knee Pain Relief Adjustable Patella Band Knee Brace for Basketball Jumpers Knee Tendonitis Osgood Schlatter (Black 1 Pack)**YIMED**$25.67**4.4★**▲ 29%**](https://www.amazon.com/dp/B0GV41KM9J)
**~~View all trending →~~**
## **What buyers say about reduce swelling knee**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Pain Relief-Overall**14%
*“Pain free”*
**Quality-Overall**12%
*“Overall a great purchase”*
**Comfort-Overall**12%
*“comfortable and provides the needed support”*
**Efficiency**9%
*“This item does its job”*
**Size-Overall**7%
*“Fit true to size”*
**Strap/String Quality**6%
*“I love how the strap is adjustable”*
**Advertised Vs Actual Product**6%
*“As advertised”*
**Value For Money**6%
*“Great deal”*
**Ease Of Use**4%
*“Ease of use”*
**Joint Pain**4%
*“made my knee feel great”*
### **What buyers complain about **
**Functionality-Overall**12%
*“Dont work well for me”*
**Size-Overall**12%
*“Too small”*
**Pain Relief-Overall**10%
*“Knee still hurts”*
**Comfort-Overall**6%
*“Not very comfy”*
**Strap/String Quality**6%
*“Missing a strap”*
**Quality-Overall**4%
*“isn't as well made as anticipated”*
**Grip**4%
*“Slips a little”*
**Joint Pain**3%
*“Not good for real knee issues”*
**Value For Money**2%
*“Much more expensive at the drug store”*
**Durability**2%
*“Already coming apart”*
### **Top return reasons **
**Size-Overall**29%
**Functionality-Overall**16%
**Strap/String Quality**12%
**Advertised Vs Actual Product**9%
**Comfort-Overall**8%
**Joint Pain**6%
**Defective Material/Parts**3%
**Pain Relief-Overall**2%
**Value For Money**2%
**Material Quality**1%
## **Common questions**
- **Is reduce swelling knee profitable to sell on Amazon United States?**
- The niche generates $86K/yr across 12 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +185.9%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the reduce swelling knee niche?**
- 11 brands and 15 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in reduce swelling knee?**
- Top complaints mined from reviews: Functionality-Overall, Size-Overall, Pain Relief-Overall. The return rate is 4.9%.
- **What does it cost to enter the reduce swelling knee niche?**
- Listings span $9.53–$33.36; the average listing price is $21.80 (sweet spot $15–$100). The average incumbent carries 4,697 reviews — the moat a new listing must climb.
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