---
title: "Baseball Underwear — $18K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/clothing-shoes-jewelry/baseball-underwear"
last_updated: "2026-08-09T16:47:12.829Z"
locale: en
meta:
description: "Niche score 39/100 · $18K/yr market · 86K searches/yr · $23.97 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $18K/yr market · 86K searches/yr · $23.97 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Baseball Underwear — $18K/yr Amazon US Niche (2026) - Flapen"
---
# **baseball underwear**
**Skip it**
A small market ($18K/yr) — this niche doesn't clear our bar today.
Market size 5Growth 25Conversion 11Competition 85Returns 45Price range 72Avg price 95Brand share 25Review moat 36Quality gap 40
**Avg price**
**Incredible****$23.97**
avg listing price — sweet spot $15–$100
**Competition**
**Great****30%**
top-5 click share — an open shelf
**Price range**
**Good****$9.47–$127.65**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Okay****3.4%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,877.7**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+0.1%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Bad****0.9%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Bad****$18K**
$18K/yr · 86K searches
According to Flapen's Amazon United States niche tracking, baseball underwear is a $18K/yr Amazon United States market (86K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Mar–Apr. Verdict: Skip it — 39/100.
Data updated Jul 8, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **baseball underwear market data**
- **Units sold / yr**
- **2K–3K**
- avg 0–100/product
- **Revenue / yr**
- **$48K–$60K**
- units × avg price
- **Conversion rate**
- **0.9%**
- **Avg BSR**
- **#878**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **97%**
- **Out of stock**
- **1.5%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **146 days**
## **Competition & brand share**
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.
**Brands**
**16 **▲rising
**Sellers**
**61**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**30%**
Top 20: 67%
**Open market**
**8%**
- Shock Doctor43% - Youper20% - COOLOMG18% - Londkaron5% - Davion4% - Legendfit2% - Open — no brand owns it (10 brands, 8%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +0.1% search growth over the last 90 days.
4K3KPrime Day '24Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar, Apr · busiest ÷ quietest = 4.8×
[**Open Trend **](https://flapen.com/research/us/clothing-shoes-jewelry/baseball-underwear/trend)
## **Top baseball underwear search terms**
- **baseball underwear**19K/yr-13.8%1.2% conv. - **shock doctor compression shorts**16K/yr+12.7%2.0% conv. - **compression shorts with cup**13K/yr-2.5%1.3% conv. - **shock doctor cup underwear youth**10K/yr+63.8%2.8% conv. - **cup underwear**5K/yr-4.6%0.7% conv. - **mens compression shorts with cup pocket**5K/yr-5.2%1.6% conv. - **underwear with cup pocket**6K/yr-9.9%0.8% conv. - **mens compression shorts with cup**6K/yr-19.4%1.2% conv. - **shock doctor youth cup**4K/yr-12.1%3.1% conv. - **shock doctor compression shorts men**1K/yr-61.1%5.0% conv. [**All search terms **](https://flapen.com/research/us/clothing-shoes-jewelry/baseball-underwear/search-terms)
## **Top baseball underwear 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%$5426%$1K9%$2K12%$2K101001K10K100K 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**Shock Doctor Compression Shorts with Cup Pocket. Athletic Supporter Underwear with Pocket (Cup NOT Included) Black Adult M**Shock Doctor**$25.22**4.4★1,274 rev](https://www.amazon.com/dp/B00181BC66) [2**COOLOMG Men Compression Shorts with Athletic Cup Sliding Underwear for Baseball Football MMA Lacrosse Field Hockey Black M**COOLOMG**$18.98**4.6★1,285 rev](https://www.amazon.com/dp/B09P9Y3FSG) [3**COOLOMG Athletic Cups Youth Boys Sliding Shorts with Protective Cup Baseball Football MMA Lacrosse Hockey White M**COOLOMG**$18.47**4.6★2,871 rev](https://www.amazon.com/dp/B07T3K428D) [4**Shock Doctor Compression Shorts with Protective Bio-Flex Cup Moisture Wicking Vented Protection Black Adult Medium**Shock Doctor**$19.67**4.4★10,034 rev](https://www.amazon.com/dp/B00181D98K) [5**Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium White)**Youper**$18.34**4.6★1,646 rev](https://www.amazon.com/dp/B07DM3YQ15)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium Black & Camo)**Youper**$18.37**1,646 rev1y ago](https://www.amazon.com/dp/B0DLKP9B9B) [**Shock Doctor Hockey Compression Short with BioFlex Cup Included for Adult Men Black**Shock Doctor**$53.90**72 rev2y ago](https://www.amazon.com/dp/B0CQTXVHP5) [**COOLOMG Youth Boys Compression Shorts with Cup Pocket NO Cup for Baseball Football Lacrosse White M 2-Pack**COOLOMG**$23.90**81 rev2y ago](https://www.amazon.com/dp/B0D21X5LC9) [**COOLOMG Mens Compression Shorts with Cup Pocket Athletic Protective Underwear for Baseball Football MMA Lacrosse Black M**COOLOMG**$25.99**204 rev2y ago](https://www.amazon.com/dp/B0D3CYTB32) [**Londkaron 3-Pack Youth Boys Stretch Boxer Briefs w/Soft Protective Cup Elite Boxer Jock for Baseball & Football (Medium White)**Londkaron**$21.84**992 rev2y ago](https://www.amazon.com/dp/B0CWTP43VM)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Youper Youth Elite Boxer Briefs w/Soft Athletic Cup Boys Stretch Boxer Jock for Baseball & Football (White Medium)**Youper**$14.85**4.6★**▲ 64%**](https://www.amazon.com/dp/B07QDR29ND) [**HEX CompFit Imp Shrt w/ULT Carb Flex Cup Black XL**Shock Doctor**$60.80**4.6★**▲ 56%**](https://www.amazon.com/dp/B09XFG6V9L) [**Londkaron 3-Pack Youth Boys Stretch Boxer Briefs w/Soft Protective Cup Elite Boxer Jock for Baseball & Football (Medium White)**Londkaron**$21.84**4.7★**▲ 55%**](https://www.amazon.com/dp/B0CWTP43VM) [**Youper 2 Pack Youth Brief with Soft Protective Athletic Cup Youth Compression Underwear for Baseball & Football (Medium Black & Camo)**Youper**$18.37**4.6★**▲ 53%**](https://www.amazon.com/dp/B0DLKP9B9B) [**Youper 2-Pack Adult Compression Shorts w/Cup Pocket Mens Athletic Supporter for Baseball & Football (Medium Black)**Youper**$23.57**4.6★**▲ 49%**](https://www.amazon.com/dp/B0BZV48B33)
**~~View all trending →~~**
## **What buyers say about baseball underwear**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Comfort-Overall**23%
*“Comfortable and reliable”*
**Size-Overall**21%
*“Fit like they should and comfortable”*
**Quality-Overall**9%
*“Overall, it is a well-made product,”*
**Material Quality**6%
*“soft material”*
**Value For Money**6%
*“Worth it”*
**Advertised Vs Actual Product**4%
*“Performs as advertised”*
**Exercise/Sports Suitability**4%
*“PERFECT FOR RUNNERS OR SPORTS”*
**Breathability**3%
*“Comfy and breathable”*
**Durability**2%
*“Seems durable”*
**Warmth**2%
*“Good and cool”*
### **What buyers complain about **
**Size-Overall**24%
*“Too tight”*
**Quality-Overall**8%
*“Seems super cheap compared to the boxers”*
**Durability**7%
*“Do not hold up”*
**Value For Money**4%
*“Overpriced and low quality”*
**Thigh Fit**4%
*“they are super saggy around the groin area”*
**Sweat Resistance**4%
*“These hold sweat”*
**Comfort-Overall**4%
*“Terribly uncomfortable”*
**Material Quality**3%
*“while wearing them it doesn't feel good like cotton”*
**Thickness**3%
*“Thick and rough material”*
**Pockets/Compartments**3%
*“The cup does not match the pocket well”*
### **Top return reasons **
**Size-Overall**77%
**Waist Fit**5%
**Advertised Vs Actual Product**3%
**Thigh Fit**3%
**Comfort-Overall**2%
**Material Quality**2%
**Length**2%
**Compression**1%
**Pockets/Compartments**1%
**Value For Money**1%
## **Common questions**
- **Is baseball underwear profitable to sell on Amazon United States?**
- The niche generates $18K/yr across 61 tracked products. 90-day search growth is +0.1%. Flapen's verdict: Skip it (39/100).
- **How competitive is the baseball underwear niche?**
- 16 brands and 61 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in baseball underwear?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Durability. The return rate is 3.4%.
- **When does demand for baseball underwear peak?**
- Demand peaks in Mar–Apr; the busiest month runs 4.8× the quietest.
- **What does it cost to enter the baseball underwear niche?**
- Listings span $9.47–$127.65; the average listing price is $23.97 (sweet spot $15–$100). The average incumbent carries 2,878 reviews — the moat a new listing must climb.
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