---
title: "Exercise Ball Size Chart — $37K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/exercise-ball-size-chart"
last_updated: "2026-07-21T17:40:21.668Z"
locale: en
meta:
description: "Niche score 35/100 · $37K/yr market · 63K searches/yr · $20.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · $37K/yr market · 63K searches/yr · $20.02 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Exercise Ball Size Chart — $37K/yr Amazon US Niche (2026) - Flapen"
---
# **exercise ball size chart**
**Skip it**
A small market ($37K/yr) — this niche doesn't clear our bar today.
Market size 9Growth 20Conversion 37Competition 40Returns 47Price range 75Avg price 88Brand share 26Review moat 23Quality gap 47
**Avg price**
**Great****$20.02**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.63–$28.00**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Returns**
**Okay****3.4%**
return rate — above 6% kills the launch gate
**Competition**
**Okay****61%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Okay****2.9%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Okay****89%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****8,262.11**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-10.8%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$37K**
$37K/yr · 63K searches
According to Flapen's Amazon United States niche tracking, exercise ball size chart is a $37K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 89% of demand. Demand peaks in Nov–Dec. Verdict: Skip it — 35/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **exercise ball size chart market data**
- **Units sold / yr**
- **2K–3K**
- avg 100–250/product
- **Revenue / yr**
- **$40K–$50K**
- units × avg price
- **Launch success**
- **—**
- 0 of 4 new (360d)
- **Conversion rate**
- **2.9%**
- **Avg BSR**
- **#53**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **60 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**8 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**89%**
Top 20: 100%
**Top-5 click share**
**61%**
Top 20: 100%
**Open market**
**6%**
- Gaiam45% - APEXUP15% - Trideer11% - Fitvids10% - EVERICH TOY8% - ProBody Pilates5% - Open — no brand owns it (2 brands, 6%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -10.8% search growth over the last 90 days.
3K2KPrime Day '25Spike '25Holiday '25 seasonSepDecMarJunAugNovMarMay
Peak months: Nov, Dec · busiest ÷ quietest = 2.4×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/exercise-ball-size-chart/trend)
## **Top exercise ball size chart search terms**
- **kids yoga ball**17K/yr-10.9%1.5% conv. - **gaiam ball**12K/yr-3.2%2.2% conv. - **yoga ball for kids**13K/yr-21.1%1.9% conv. - **kids exercise ball**6K/yr-8.9%1.8% conv. - **gaiam yoga ball**4K/yr-3.2%3.6% conv. - **exercise ball for kids**4K/yr-16.3%1.1% conv. - **therapy ball for kids**4K/yr-17.0%1.7% conv. - **yoga ball kids**4K/yr+1.0%2.1% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/exercise-ball-size-chart/search-terms)
## **Top exercise ball size chart 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%$4K20%$7K30%$11K40%$15K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Gaiam Kids Balance Ball Exercise Stability Yoga Ball Blue 45cm**Gaiam**$17.00**4.6★1,150 rev](https://www.amazon.com/dp/B01M25TPKV) [2**Fitvids Anti-Burst and Slip Resistant Exercise Ball Yoga Ball Fitness Ball Birthing Ball with Quick Pump 2 000-Pound Capacity Blue 22-inch M**Fitvids**$11.99**4.5★46,471 rev](https://www.amazon.com/dp/B07RX2J294) [3**Trideer Exercise Ball for Yoga Pilates & Fitness Stability Ball Equipment for Home Gym & Office Chair Core & Balance Training Accessories Physical Therapy Equipment Quick Pump Included 5 Sizes**Trideer**$17.56**4.6★44,980 rev](https://www.amazon.com/dp/B07DK9QZV9) [4**APEXUP Yoga Ball 660 lbs Anti-Burst Exercise Ball with Pump 5 Sizes (M (19~22) 55cm Pink)**APEXUP**$16.84**4.6★4,924 rev](https://www.amazon.com/dp/B0CW14NRQQ) [5**EVERICH TOY Peanut Ball for Kids 18 Anti-Burst Autism Sensory Exercise Ball for Physical Therapy Balance Training & Yoga Bouncy Ball Chair for Boys and Girls.**EVERICH TOY**$28.00**4.5★25 rev](https://www.amazon.com/dp/B0GHND6FY9)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**ZOOJOY Peanut Ball for Kids -18X35 Inch Anti-Burst Yoga Ball with Pump - Non-Slip Sensory Wiggle Seat for Balance Core Strength Physical Therapy - Home School & Therapy Chair Alternative**ZOOJOY**$27.87**13 rev3mo ago](https://www.amazon.com/dp/B0GSZ65NQF) [**PlayZap Peanut Ball for Kids Youths Adults Exercise Ball Stable Anti-Burst for Physical Therapy & Balance & Core Training Non-Slip Yoga Ball Chair Includes Pump (45cm/50cm)**PlayZap**$27.73**10 rev4mo ago](https://www.amazon.com/dp/B0GQLJC4H4) [**EVERICH TOY Peanut Ball for Kids 18 Anti-Burst Autism Sensory Exercise Ball for Physical Therapy Balance Training & Yoga Bouncy Ball Chair for Boys and Girls.**EVERICH TOY**$28.00**25 rev5mo ago](https://www.amazon.com/dp/B0GHND6FY9) [**EVERICH TOY Peanut Ball for Kids 18 Anti-Burst Autism Sensory Exercise Ball for Physical Therapy Balance Training & Yoga Bouncy Ball Chair for Boys and Girls.**EVERICH TOY**$27.90**25 rev5mo ago](https://www.amazon.com/dp/B0GHN1985D) [**Gaiam Mini Ab Ball (Romance Rose) 8 Inch Inflatable Anti-Burst Exercise Ball for Core Strength Pilates Yoga and Physical Therapy Includes Inflation Straw Plug & Downloadable Exercise Guide**Gaiam**$10.63**142 rev1y ago](https://www.amazon.com/dp/B0F4DQ5GT6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**ZOOJOY Peanut Ball for Kids -18X35 Inch Anti-Burst Yoga Ball with Pump - Non-Slip Sensory Wiggle Seat for Balance Core Strength Physical Therapy - Home School & Therapy Chair Alternative**ZOOJOY**$27.87**3.7★**▲ 133%**](https://www.amazon.com/dp/B0GSZ65NQF) [**PlayZap Peanut Ball for Kids Youths Adults Exercise Ball Stable Anti-Burst for Physical Therapy & Balance & Core Training Non-Slip Yoga Ball Chair Includes Pump (45cm/50cm)**PlayZap**$27.73**4.5★**▲ 132%**](https://www.amazon.com/dp/B0GQLJC4H4) [**EVERICH TOY Peanut Ball for Kids 18 Anti-Burst Autism Sensory Exercise Ball for Physical Therapy Balance Training & Yoga Bouncy Ball Chair for Boys and Girls.**EVERICH TOY**$28.00**4.5★**▲ 132%**](https://www.amazon.com/dp/B0GHND6FY9) [**EVERICH TOY Peanut Ball for Kids 18 Anti-Burst Autism Sensory Exercise Ball for Physical Therapy Balance Training & Yoga Bouncy Ball Chair for Boys and Girls.**EVERICH TOY**$27.90**4.5★**▲ 132%**](https://www.amazon.com/dp/B0GHN1985D) [**ProBody Pilates Yoga Ball - Fresh Colors Exercise Ball for Stability Pregnancy Workout Physical Therapy & Birthing Balance Ball Chair (Sky 65 cm)**ProBody Pilates**$19.99**4.5★**▲ 81%**](https://www.amazon.com/dp/B01DVHNRVM)
**~~View all trending →~~**
## **What buyers say about exercise ball size chart**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**20%
*“Excellent product”*
**Inflation/Deflation**9%
*“Easy to inflate”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Value For Money**8%
*“Good value”*
**Exercise/Sports Suitability**7%
*“Great Exercise Ball”*
**Size-Overall**5%
*“Good size”*
**Ease Of Use**5%
*“Easy to use”*
**Durability**5%
*“It has held up”*
**Efficiency**3%
*“are functional”*
**Stretchability/Expandability/Elasticity**3%
*“great to use to stretch”*
### **What buyers complain about **
**Inflation/Deflation**16%
*“Keeps deflating”*
**Size-Overall**14%
*“Big”*
**Durability**13%
*“Poor Durability”*
**Quality-Overall**9%
*“Cheap and trash”*
**Leak-Proof**5%
*“Leaks air”*
**Value For Money**3%
*“they are quite expensive”*
**Ease Of Use**3%
*“difficult to use”*
**Strength**2%
*“is not firm”*
**Product Condition**2%
*“Bought new received used”*
**Material Quality**2%
*“Thats got better materials”*
### **Top return reasons **
**Size-Overall**69%
**Inflation/Deflation**6%
**Value For Money**4%
**Advertised Vs Actual Product**3%
**Functionality-Overall**2%
**Leak-Proof**2%
**Material Quality**2%
**Product Condition**1%
**Defective Material/Parts**1%
**Exercise/Sports Suitability**1%
## **Common questions**
- **Is exercise ball size chart profitable to sell on Amazon United States?**
- The niche generates $37K/yr across 18 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -10.8%. Flapen's verdict: Skip it (35/100).
- **How competitive is the exercise ball size chart niche?**
- 8 brands and 18 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 89% of demand.
- **What do buyers complain about in exercise ball size chart?**
- Top complaints mined from reviews: Inflation/Deflation, Size-Overall, Durability. The return rate is 3.4%.
- **When does demand for exercise ball size chart peak?**
- Demand peaks in Nov–Dec; the busiest month runs 2.4× the quietest.
- **What does it cost to enter the exercise ball size chart niche?**
- Listings span $10.63–$28.00; the average listing price is $20.02 (sweet spot $15–$100). The average incumbent carries 8,262 reviews — the moat a new listing must climb.
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