chest strap
Skip itA concentrated shelf (top 5 take 79% of clicks) — this niche doesn't clear our bar today.
Price range
Great$5.87–$96.35cheapest to priciest tracked listing — scored on the share inside $15–$100
Avg price
Great$17.95avg listing price — sweet spot $15–$100
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Conversion
Good5.1%search→purchase rate — share of searches ending in a sale
Growth
Okay+12.8%90-day search growth — must beat 0% to launch
Market size
Okay$178K$178K/yr · 194K searches
Returns
Okay4.6%return rate — above 5% kills the launch gate
Review moat
Okay3,599.18avg incumbent reviews — the moat a new listing must climb
Brand share
Bad91%top-5 brand share — brand-locked demand
Competition
Bad79%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, chest strap is a $178K/yr Amazon United States market (194K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 43/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
chest strap market data
- Units sold / yr
- 8K–10K
- avg 500–750/product
- Revenue / yr
- $144K–$180K
- units × avg price
- Conversion rate
- 5.1%
- Avg BSR
- #179
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 91%
- Out of stock
- 0.0%
- Avg brand age
- 41 months
- Avg seller age
- 186 days
Competition & brand share
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 falling
Sellers
20
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
79%
Top 20: 100%
Open market
5%
- Wisdompro65%
- ManTangSun12%
- Keromtein6%
- YYST5%
- Herschel4%
- 8TIMBER3%
- Open — no brand owns it (2 brands, 5%)
Demand
Weekly Amazon search volume, last 16 weeks — +12.8% search growth over the last 90 days.Top chest strap search terms
- backpack chest strap46K/yr
- sternum straps for backpacks28K/yr
- chest strap for backpack23K/yr
- chest strap26K/yr
- backpack chest strap add on17K/yr
- sternum strap16K/yr
- backpack sternum strap8K/yr
- backpack chest straps8K/yr
- chest straps5K/yr
- backpack front strap3K/yr
Top chest strap 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 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Wisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Black)
Wisdompro$6.804.3★3,744 rev
ManTangSun Outdoor Adjustable Chest Strap for Backpack Replacement Camping Hiking Sternum Straps for Backpacks With Quick Release Buckle (Black 1pcs)
ManTangSun$5.873.5★66 rev
Wisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Khaki)
Wisdompro$6.764.3★3,744 rev
Wisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Gray)
Wisdompro$6.774.3★3,744 rev
2 PCS Backpack Chest Strap Add on Adjustable Sternum Straps for Backpacks and Schoolbag Heavy Duty Backpack Waist Strap Chest Belt with Whistle Quick Release Buckle and Slide Lock for Hiking Jogging
Keromtein$6.524.3★76 rev
Newest
by launch date2 PCS Backpack Chest Strap Add on Adjustable Sternum Straps for Backpacks and Schoolbag Heavy Duty Backpack Waist Strap Chest Belt with Whistle Quick Release Buckle and Slide Lock for Hiking Jogging
Keromtein$6.5276 rev
Herschel Supply Co. Sternum Strap Black Standard
Herschel$13.047 rev
ManTangSun Outdoor Adjustable Chest Strap for Backpack Replacement Camping Hiking Sternum Straps for Backpacks With Quick Release Buckle (Black 1pcs)
ManTangSun$5.8766 rev
Aburbe Backpack Chest Strap Universal Add on Adjustable Sternum Strap Chest Belt Replacement with Heavy Duty Quick Release Buckle Clip for Travel Hiking Camping School (Black)
Aburbe$8.86183 rev
Wisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Gray)
Wisdompro$6.773,744 rev
Trending
90-day click momentumWisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Gray)
Wisdompro$6.774.3★
Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth Waterproof HR Sensor for Men and Women Black M-XXL
POLAR$96.354.2★
Wisdompro Backpack Chest Strap Heavy Duty Adjustable Backpack Sternum Strap Chest Belt with Quick Release Buckle for Hiking and Jogging - with Slide Locks (Khaki)
Wisdompro$6.764.3★
Herschel Supply Co. Sternum Strap Black Standard
Herschel$13.045.0★
ManTangSun Outdoor Adjustable Chest Strap for Backpack Replacement Camping Hiking Sternum Straps for Backpacks With Quick Release Buckle (Black 1pcs)
ManTangSun$5.873.5★
What buyers say about chest strap
What buyers praise and complain about, mined from review topics.What buyers love
“Overall, much better tech than a lot of watches etc that dont even have great HR tracking”
“The Polar app is well thoughtout and very intuity”
“Easy to use”
“Great fitting strap”
“Works well in combination with the Schwinn Airdyne Pro”
“functional - no problems”
“Exactly as advertised”
“Fits great”
“holds firm”
“this Polar heart monitor is the best tool for the price”
What buyers complain about
“broke on first use”
“Never connects”
“Poor Quality Control”
“it never powered on”
“the strap is way too tight”
“I couldnt even get it to work it was horrible just trying to get the app”
“Unacceptable for the price”
“Battery issues soon after purchase”
“Will not pair no matter what I do”
“If you require accuracy, this HR monitor is not the answer”
Top return reasons
Common questions
- Is chest strap profitable to sell on Amazon United States?
- The niche generates $178K/yr across 11 tracked products. 90-day search growth is +12.8%. Flapen's verdict: Skip it (43/100).
- How competitive is the chest strap niche?
- 8 brands and 20 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in chest strap?
- Top complaints mined from reviews: Durability, Connectivity-Overall, Quality-Overall. The return rate is 4.6%.
- What does it cost to enter the chest strap niche?
- Listings span $5.87–$96.35; the average listing price is $17.95 (sweet spot $15–$100). The average incumbent carries 3,599 reviews — the moat a new listing must climb.