hamstring stretcher
Skip itSoft demand (-7.8% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$84.77avg listing price — sweet spot $15–$100
Returns
Great2.0%return rate — above 6% kills the launch gate
Conversion
Good6.6%search→purchase rate — share of searches ending in a sale
Market size
Good$564K$564K/yr · 100K searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Review moat
Okay2,429.82avg incumbent reviews — the moat a new listing must climb
Price range
Okay$6.01–$239.98cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay85%top-5 brand share — brands hold most of the demand
Competition
Okay67%top-5 click share — leaders hold, buyers still browse
Growth
Bad-7.8%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, hamstring stretcher is a $564K/yr Amazon United States market (100K searches/yr). The top 5 brands hold 85% of demand. Demand peaks in Dec. Verdict: Skip it — 48/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
hamstring stretcher market data
- Units sold / yr
- 6K–8K
- avg 250–500/product
- Revenue / yr
- $509K–$678K
- units × avg price
- Launch success
- —
- 1 of 2 new (360d)
- Conversion rate
- 6.6%
- Avg BSR
- #59
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 50 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products take 67% of clicks — established leaders, but buyers still shop beyond them.Brands
13 falling
Sellers
16
Top-5 brand share
85%
Top 20: 100%
Top-5 click share
67%
Top 20: 100%
Open market
11%
- CASTLE FLEXX35%
- Acozycoo22%
- IdealStretch12%
- Trideer11%
- CTRL Sports6%
- comness4%
- Open — no brand owns it (7 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -7.8% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 2.0×
Top hamstring stretcher search terms
- hamstring stretcher83K/yr
- hamstring stretch6K/yr
- quad stretcher4K/yr
- hamstring stretcher device3K/yr
- it band stretcher4K/yr
Top hamstring stretcher 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.
All 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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)
Acozycoo$8.604.7★708 rev
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$239.984.5★421 rev
IdealStretch - Original Patented Hamstring Stretcher Lower Back Stretcher Hip Stretcher & Calf Stretcher - Pain Relief & Leg Stretcher
IdealStretch$52.464.5★2,422 rev
Trideer Stretching Strap Yoga Strap Physical Therapy for Home Workout Exercise Pilates and Gymnastics 10 Loops Non-Elastic Stretch Bands with Aesthetic Packaging for Women & Men (Black)
Trideer$6.014.7★8,749 rev
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$227.614.5★421 rev
Newest
by launch date
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$228.916 rev
Whiidoom Hamstring Stretcher Knee Extension Device Adjustable Lower Back Stretcher Calf Stretcher Leg Stretcher and Hip Stretcher for Knee Pain Relief
Whiidoom$37.7251 rev
Hamstring Stretcher Knee Extension Device Lower Back Hip & Calf Stretching
Zakdbbry$42.00103 rev
PressLoo Hamstring Stretcher for Knee Extension & Pain Relief Adjustable Low Back Calf Leg & Hip Stretching Device for Flexibility ACL MCL Surgery Recovery Physical Therapy & Rehab Equipment
PressLoo$43.9182 rev
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)
Acozycoo$8.60708 rev
Trending
90-day click momentum
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$230.664.5★
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$232.214.5★
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$228.914.3★
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)
Acozycoo$8.604.7★
CastleFlexx Mobility and Full Body Strengthening Device | Non-Elastic Stretch Strap with Natural Premium Cork Handles for Stretching Exercise Physical Therapy and Yoga
CASTLE FLEXX$227.614.5★
What buyers say about hamstring stretcher
What buyers praise and complain about, mined from review topics.What buyers love
“Easy and nice stretch”
“Decent quality build”
“As advertised”
“Great value”
“Excellent strap for the money”
“has been easy to work with”
“It Works”
“holds up well with regular use”
“makes my exercises easy to do”
“Stay Flexible”
What buyers complain about
“Doesn't stretch”
“the quality control is not consistent”
“At around $50 hard to know if this is a good value”
“this is too small for me”
“impossible”
“Broke after 2nd use”
“the app doesn't work”
“2 straps broke during first use without applying much pressure at all”
“I did purchase another one just like this for a little bit more money than that seemed to be a little bit more flexible”
“NO INSTRUCTIONS WITH PACKAGE TO TELL YOU HOW TO USE IT”
Top return reasons
Common questions
- Is hamstring stretcher profitable to sell on Amazon United States?
- The niche generates $564K/yr across 17 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -7.8%. Flapen's verdict: Skip it (48/100).
- How competitive is the hamstring stretcher niche?
- 13 brands and 16 sellers compete. The top 5 products take 67% of clicks and top 5 brands hold 85% of demand.
- What do buyers complain about in hamstring stretcher?
- Top complaints mined from reviews: Stretchability/Expandability/Elasticity, Quality-Overall, Value For Money. The return rate is 2.0%.
- When does demand for hamstring stretcher peak?
- Demand peaks in Dec; the busiest month runs 2.0× the quietest.
- What does it cost to enter the hamstring stretcher niche?
- Listings span $6.01–$239.98; the average listing price is $84.77 (sweet spot $15–$100). The average incumbent carries 2,430 reviews — the moat a new listing must climb.