---
title: "Size 4 Basketball — $322K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/sports-outdoors/size-4-basketball"
last_updated: "2026-08-11T19:51:59.586Z"
locale: en
meta:
description: "Niche score 57/100 · $322K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 57/100 · $322K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Size 4 Basketball — $322K/yr Amazon US Niche (2026) - Flapen"
---
# **size 4 basketball**
**Worth a look**
Shows low returns (1.4%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 52Growth 27Conversion 63Competition 80Returns 86Price range 75Avg price 85Brand share 54Review moat 48Quality gap 23
**Returns**
**Great****1.4%**
return rate — above 5% kills the launch gate
**Avg price**
**Great****$18.82**
avg listing price — sweet spot $15–$100
**Competition**
**Great****35%**
top-5 click share — an open shelf
**Price range**
**Great****$9.18–$32.90**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Good****5.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Market size**
**Good****$322K**
$322K/yr · 307K searches
**Review moat**
**Okay****1,683.12**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+1.4%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, size 4 basketball is a $322K/yr Amazon United States market (307K searches/yr). The top 5 brands hold 72% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Worth a look — 57/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **size 4 basketball market data**
- **Units sold / yr**
- **15K–20K**
- avg 250–500/product
- **Revenue / yr**
- **$282K–$376K**
- units × avg price
- **Conversion rate**
- **5.6%**
- **Avg BSR**
- **#47**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **96%**
- **Out of stock**
- **4.8%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **147 days**
## **Competition & brand share**
Clicks spread well past the top 5 (35% combined) — an open shelf where new products get seen.
**Brands**
**14 **▼falling
**Sellers**
**57**
**Top-5 brand share**
**72%**
Top 20: 100%
**Top-5 click share**
**35%**
Top 20: 74%
**Open market**
**21%**
- KUYOTQ32% - Wisdom Leaves13% - WILSON13% - Mikasa8% - NEOGOAT7% - FAKOFIS6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.4% search growth over the last 90 days.
13K8KSpike '24Black Friday '24Holiday '24Spike '25Holiday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Nov, Dec · busiest ÷ quietest = 5.5×
[**Open Trend **](https://flapen.com/research/us/sports-outdoors/size-4-basketball/trend)
## **Top size 4 basketball search terms**
- **size 4 basketball**121K/yr+1.4%4.1% conv. - **kid basketball**20K/yr+11.1%2.3% conv. - **size 5 basketball youth**12K/yr+29.6%4.7% conv. - **size 4 basketball for kids**26K/yr+0.4%5.5% conv. - **25.5 inch basketball for kids**24K/yr-29.1%4.8% conv. - **basketball kids ages 4-8**11K/yr+12.8%2.9% conv. - **27.5 basketball youth**16K/yr-2.3%3.8% conv. - **kids basketball size 4**9K/yr+2.7%4.2% conv. - **kids basketballs**8K/yr+0.9%1.3% conv. - **youth basketball size 4**9K/yr+0.2%5.0% conv. [**All search terms **](https://flapen.com/research/us/sports-outdoors/size-4-basketball/search-terms)
## **Top size 4 basketball 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%3%$10K6%$19K9%$29K12%$39K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**KUYOTQ Kids Youth Size 4 (25.5) Basketball Premium Rubber Outdoor Youth Indoor Outdoor for Boys Girls Teen Game Sports Basketball Gifts (Deflated Red White Blue)**KUYOTQ**$18.15**4.7★431 rev](https://www.amazon.com/dp/B0CSDD82D3) [2**Mikasa BX1006 Varsity Series Basketball Size 4 - 25.5**Mikasa**$17.95**4.6★1,205 rev](https://www.amazon.com/dp/B003WWVAY8) [3**WILSON NBA DRV Series Basketball - DRV Brown Size 5 - 27.5**WILSON**$14.53**4.6★10,838 rev](https://www.amazon.com/dp/B091MLGVKX) [4**KUYOTQ Kids Youth Size 5 (27.5) Basketball Premium Rubber Outdoor Youth Indoor Outdoor for Boys Girls Teen Game Sports Basketball Gifts (Deflated Red White Blue)**KUYOTQ**$19.16**4.7★527 rev](https://www.amazon.com/dp/B09TJ6TRNL) [5**BALSMART Size 4 for Kids Youth 25.5 Basketball for Boys and Girls Indoor Outdoor Play**BALSMART**$17.40**4.5★203 rev](https://www.amazon.com/dp/B0DNLWT4CZ)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NEOGOAT Pink Graffiti Size 4 Basketball - 25.5 Inch Rubber Outdoor Basketball Size 4 for Kids Youth Girls - Backyard & Court Play for Young Girls Athletes (Deflated Without Pump)**NEOGOAT**$18.91**150 rev5mo ago](https://www.amazon.com/dp/B0GKXZKNPT) [**Wisdom Leaves Kids Youth Basketball Size 4 (25.5) Soft Basketball for Boys Girls Age 4-8 Small Indoor Outdoor Basket Balls for Training Basic SkillsDark Blue**Wisdom Leaves**$19.38**2,678 rev6mo ago](https://www.amazon.com/dp/B0G38HM8SQ) [**PIXUYE Size 4 Soft Lightweight Kids Basketball 25.5 Inch for Boys Girls Ages 5-8 Youth Indoor Outdoor Pool Training Play Birthday Gifts (line blue4)**PIXUYE**$18.02**29 rev8mo ago](https://www.amazon.com/dp/B0G1Y72LPL) [**PIXUYE Size 4 Soft Lightweight Kids Basketball 25.5 Inch for Boys Girls Ages 5-8 Youth Indoor Outdoor Pool Training Play Birthday Gifts (Camo Blue)**PIXUYE**$17.81**29 rev8mo ago](https://www.amazon.com/dp/B0G1Y3HS9V) [**NEOGOAT Kids Youth Size 4 Basketball 25.5 Durable High-Bounce Thickened Rubber Mini Size 4 Green Basketball for in & Outdoor Play for Boys & Girls Ages 4-8 (Deflated Without Pump)**NEOGOAT**$18.54**150 rev11mo ago](https://www.amazon.com/dp/B0FLWPR4S2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**KUYOTQ 2PCS Kids Youth Toddlers Size 4 Basketball 25.5 Premium Rubber in Pairs in& Outdoor for Boys Girls Kids Youth Game Sports Basketball Gifts**KUYOTQ**$27.55**4.7★**▲ 110%**](https://www.amazon.com/dp/B0FGJ7MH2N) [**NEOGOAT Pink Graffiti Size 4 Basketball - 25.5 Inch Rubber Outdoor Basketball Size 4 for Kids Youth Girls - Backyard & Court Play for Young Girls Athletes (Deflated Without Pump)**NEOGOAT**$18.91**4.7★**▲ 100%**](https://www.amazon.com/dp/B0GKXZKNPT) [**PIXUYE Size 4 Soft Lightweight Kids Basketball 25.5 Inch for Boys Girls Ages 5-8 Youth Indoor Outdoor Pool Training Play Birthday Gifts (Camo Blue)**PIXUYE**$17.81**4.9★**▲ 71%**](https://www.amazon.com/dp/B0G1Y3HS9V) [**Wisdom Leaves Kids Youth Basketball Size 4 (25.5) Soft Basketball for Boys Girls Age 4-8 Small Indoor Outdoor Basket Balls for Training Basic SkillsDark Blue**Wisdom Leaves**$19.38**4.6★**▲ 70%**](https://www.amazon.com/dp/B0G38HM8SQ) [**Wilson Sporting Goods Wilson NCAA Final Four Edition Basketball Official - 29.5 WTB1233**WILSON**$24.21**4.7★**▲ 53%**](https://www.amazon.com/dp/B0009KF59M)
**~~View all trending →~~**
## **What buyers say about size 4 basketball**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**18%
*“Excellent Quality”*
**Size-Overall**13%
*“Good size”*
**Value For Money**9%
*“Great value”*
**Color**8%
*“The color is vibrant”*
**Grip**7%
*“Good grip”*
**Advertised Vs Actual Product**5%
*“it was exactly what he wanted”*
**Durability**5%
*“Very durable”*
**Inflation/Deflation**4%
*“Once you inflate the ball it's great”*
**Suitable For Indoor**3%
*“Great for indoor/outdoor”*
**Suitability Beginner**2%
*“Solid starter ball”*
### **What buyers complain about **
**Inflation/Deflation**20%
*“Won't stay inflated”*
**Size-Overall**11%
*“Small basket ball”*
**Quality-Overall**9%
*“Bad quality”*
**Durability**8%
*“Ripped within hours”*
**Leak-Proof**8%
*“one of them leaks”*
**Flatness**5%
*“it always goes flat”*
**Grip**4%
*“Grip could be better”*
**Advertised Vs Actual Product**3%
*“falsely advertised diameter”*
**Product Condition**2%
*“Sent me a used ball”*
**Smell**1%
*“The ball even has the smell of a normal basketball”*
### **Top return reasons **
**Size-Overall**48%
**Inflation/Deflation**9%
**Value For Money**6%
**Leak-Proof**6%
**Functionality-Overall**5%
**Advertised Vs Actual Product**4%
**Quality-Overall**3%
**Material Quality**3%
**Grip**3%
**Product Condition**1%
## **Common questions**
- **Is size 4 basketball profitable to sell on Amazon United States?**
- The niche generates $322K/yr across 51 tracked products. 2 of 10 products launched in the last 360 days are still selling. 90-day search growth is +1.4%. Flapen's verdict: Worth a look (57/100).
- **How competitive is the size 4 basketball niche?**
- 14 brands and 57 sellers compete. The top 5 products take 35% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in size 4 basketball?**
- Top complaints mined from reviews: Inflation/Deflation, Size-Overall, Quality-Overall. The return rate is 1.4%.
- **When does demand for size 4 basketball peak?**
- Demand peaks in Jan–Nov–Dec; the busiest month runs 5.5× the quietest.
- **What does it cost to enter the size 4 basketball niche?**
- Listings span $9.18–$32.90; the average listing price is $18.82 (sweet spot $15–$100). The average incumbent carries 1,683 reviews — the moat a new listing must climb.
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